Super PACs, party committees and other political groups spent $1 billion through Nov. 4, 2018 on independent advertising and voter contact efforts aimed at influencing the Nov. 6 midterms.

The Senate races with the most independent spending in the past week.

Incumbent outspent

Florida
Nelson (D)* vs. Scott (R)
$17.6 million spent in past week
Toss-up
Tennessee
Blackburn (R) vs. Bredesen (D)
$11.9 million
Lean R
Missouri
McCaskill (D)* vs. Hawley (R)
$9.4 million
Toss-up
Indiana
Donnelly (D)* vs. Braun (R)
$8.6 million
Toss-up
Nevada
Heller (R)* vs. Rosen (D)
$7.7 million
Toss-up
Arizona
McSally (R) vs. Sinema (D)
$6.7 million
Toss-up (R-held)

*Currently in Congress. Ratings for Senate races from The Washington Post.

Last week, Senate races drew $83 million in independent spending. The charts above show the contests with the most spending.

One of the most expensive races is the Senate contest in Indiana, where Democratic incumbent Sen.Joe Donnelly is battling to keep his seat against Republican Mike Braun. So far, party committees and independent groups have spent $62.2 million on the race — $28 million supporting Braun and $35.3 million backing Donnelly.

$427 million has been spent in Senate races on ads against a candidate.

Senate races with most spending against candidates

Florida

Nelson (D)* vs Scott (R)

$65.2 million against candidates

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

Missouri

McCaskill (D)* vs Hawley (R)

$56.3 million

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

Nevada

Heller (R)* vs Rosen (D)

$55.9 million

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

Indiana

Donnelly (D)* vs Braun (R)

$54.0 million

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

Arizona

McSally (R) vs Sinema (D)

$45.3 million

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

*Incumbent

Senate races with most spending against candidates

Florida

Nelson (D)* vs Scott (R)

$65.2 million against candidates

Missouri

McCaskill (D)* vs Hawley (R)

$56.3 million

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

Indiana

Donnelly (D)* vs Braun (R)

$54.0 million

Nevada

Heller (R)* vs Rosen (D)

$55.9 million

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

Arizona

McSally (R) vs Sinema (D)

$45.3 million

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

*Incumbent

Senate races with most spending against candidates

Florida

Nelson (D)* vs Scott (R)

$65.2 million against candidates

Missouri

McCaskill (D)* vs Hawley (R)

$56.3 million

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

R

FOR

D

FOR

D

FOR

R

Nevada

Heller (R)* vs Rosen (D)

$55.9 million

Indiana

Donnelly (D)* vs Braun (R)

$54.0 million

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

Arizona

McSally (R) vs Sinema (D)

$45.3 million

Toss-up

AGAINST

R

AGAINST

D

FOR

D

FOR

R

*Incumbent

Senate races with most spending against candidates

Florida

Nelson (D)* vs Scott (R)

$65.2 million against candidates

Missouri

McCaskill (D)* vs Hawley (R)

$56.3 million

Nevada

Heller (R)* vs Rosen (D)

$55.9 million

Toss-up

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

FOR

D

FOR

R

Arizona

McSally (R) vs Sinema (D)

$45.3 million

Indiana

Donnelly (D)* vs Braun (R)

$54.0 million

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

*Incumbent

Senate races with most spending against candidates

Florida

Nelson (D)* vs Scott (R)

$65.2 million against candidates

Missouri

McCaskill (D)* vs Hawley (R)

$56.3million

Indiana

Donnelly (D)* vs Braun (R)

$54.0 million

Arizona

McSally (R) vs Sinema (D)

$45.3 million

Nevada

Heller (R)* vs Rosen (D)

$55.9 million

Toss-up

Toss-up

Toss-up

Toss-up

Toss-up

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

R

FOR

D

FOR

R

FOR

D

FOR

R

FOR

D

FOR

D

FOR

R

FOR

D

FOR

R

*Incumbent

The two biggest independent spenders in Senate races are the main super PACs aligned with each party. The GOP Senate Leadership Fund has been buoyed by heavyweight donors, such as casino magnate Sheldon Adelson and his wife, Miriam, and Blackstone chairman Stephen Schwarzman.

On the Democratic side, Senate Majority PAC has collected large sums from hedge fund manager S. Donald Sussman and financier George Soros, among others.

[Meet the wealthy donors pouring millions into the 2018 elections]

Top spenders in Senate races

Spending type:

For D

Against R

For R

Against D

Senate Majority PAC $89 million

Backs Democratic Senate candidates

$4,559,202
$84,419,138

Senate Leadership Fund $86 million

Supports Senate GOP candidates

$8,762,473
$77,208,106

Majority Forward $40.2 million

Nonprofit group affiliated with Senate Majority PAC

$3,410,941
$36,816,486

NRSC $34 million

Party committee to elect Republicans to the Senate

$1,038,429
$32,922,595

New Republican PAC $29.5 million

Supports Florida Senate candidate Rick Scott

$29,512,317

DSCC $28.9 million

Party committee to elect Democrats to the Senate

$28,871,388

Priorities USA Action $19.2 million

Supports Democratic candidates

$4,545,925
$14,671,336

Defend Arizona $17.8 million

Supports Republicans in Congress

$461,856
$17,317,371

America First Action $9.1 million

Supports President Trump's agenda

$412,554
$8,716,290

Women Vote! $7.7 million

Backs Democratic women candidates

$517,332
$7,204,421
Totals include spending in special elections.

Explore Senate races

Races with at least $250,000 in spending shown. Incumbent outspent

Florida
Nelson (D)* vs. Scott (R)
$75.9 million spent since Jan. 2017
Toss-up
Nevada
Heller (R)* vs. Rosen (D)
$63.8 million
Toss-up
Indiana
Donnelly (D)* vs. Braun (R)
$63.3 million
Toss-up
Missouri
McCaskill (D)* vs. Hawley (R)
$60.3 million
Toss-up
Arizona
McSally (R) vs. Sinema (D)
$55.1 million
Toss-up (R-held)
Tennessee
Blackburn (R) vs. Bredesen (D)
$52.1 million
Lean R
Montana
Tester (D)* vs. Rosendale (R)
$38.9 million
Toss-up
West Virginia
Manchin (D)* vs. Morrisey (R)
$29.2 million
Lean D
New Jersey
Menendez (D)* vs. Hugin (R)
$19.4 million
Lean D
North Dakota
Heitkamp (D)* vs. Cramer (R)
$16.8 million
Lean R
Texas
Cruz (R)* vs. O’Rourke (D)
$12.3 million
Lean R
Wisconsin
Baldwin (D)* vs. Vukmir (R)
$6.8 million
Lean D
Ohio
Brown (D)* vs. Renacci (R)
$3.9 million
Likely D
Michigan
Stabenow (D)* vs. James (R)
$3.6 million
Likely D
Mississippi
Hyde-Smith (R) vs. Espy (D) (Special election)
$3.6 million
Likely R
Vermont
Sanders (I)* vs. Paige (R)
$2 million
Safe D
Pennsylvania
Casey (D)* vs. Barletta (R)
$1.9 million
Likely D
Maine
King (I)* vs. Brakey (R)
$1.6 million
Safe D
Delaware
Carper (D)* vs. Arlett (R)
$1.3 million
Safe D
Minnesota
Smith (D)* vs. Housley (R) (Special election)
$1.1 million
Lean D
Massachusetts
Warren (D)* vs. Diehl (R)
$1.1 million
Safe D
Virginia
Kaine (D)* vs. Stewart (R)
$394,000
Likely D
New York
Gillibrand (D)* vs. Farley (R)
$324,000
Safe D
Mississippi
Wicker (R)* vs. Baria (D)
$280,000
Safe R

*Currently in Congress. Ratings for Senate races from The Washington Post.

Races with spending under $250,000 not shown above: California ($159,000), Rhode Island ($155,000), Minnesota ($79,000), Utah ($59,000), Washington ($32,000), Maryland ($31,000), New Mexico ($27,000) and Connecticut ($6,000). Races with no independent spending not listed.

Fight for control over the House is playing out across a broad map this year, attracting millions in independent spending.

The House races with the most independent spending in the past week.

Incumbent outspent

Michigan 8th
Bishop (R)* vs. Slotkin (D)
$3.3 million spent in last week
Toss-up (R-held)
Florida 26th
Curbelo (R)* vs. Mucarsel-Powell (D)
$3.1 million
Toss-up (R-held)
Texas 32nd
Sessions (R)* vs. Allred (D)
$2.8 million
Toss-up (R-held)
Pennsylvania 1st
Fitzpatrick (R)* vs. Wallace (D)
$2.8 million
Toss-up (R-held)
Maine 2nd
Poliquin (R)* vs. Golden (D)
$2.5 million
Toss-up (R-held)
Washington 8th
Rossi (R) vs. Schrier (D)
$2.4 million
Lean D

*Currently in Congress. Ratings for House races from the Cook Political Report.

Last week, House races drew $85 million in independent spending. The charts above show the contests with the most spending.

In the first two weeks of October, billionaire Michael Bloomberg’s super PAC poured $4.5 million and $4 million into two California House races in toss-up districts, as well as more than $30 million into other races.

$418 million has been spent so far in House races on ads against a candidate.

House races with most spending against candidates

Washington 8th

Rossi (R) vs. Schrier (D)

$14.8 million against candidates

Toss-up (R-held)

AGAINST

R

AGAINST

D

FOR

D

FOR

R

California 48th

Rohrabacher (R)* vs. Rouda (D)

$14.7 million

Toss-up (R-held)

AGAINST

R

AGAINST

D

FOR

D

FOR

R

New York 22nd

Tenney (R)* vs. Brindisi (D)

$13.9 million

Toss-up (R-held)

AGAINST

R

AGAINST

D

FOR

D

FOR

R

Texas 32nd

Sessions (R)* vs. Allred (D)

$12.4 million

Toss-up (R-held)

AGAINST

R

AGAINST

D

FOR

D

FOR

R

Colorado 6th

Coffman (R)* vs. Crow (D)

$12.1 million

Lean D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

*Incumbent

House races with most spending against candidates

Washington 8th

Rossi (R) vs. Schrier (D)

$14.8 million against candidates

California 48th

Rohrabacher (R)* vs. Rouda (D)

$14.7 million

Toss-up (R-held)

Toss-up (R-held)

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

New York 22nd

Tenney (R)* vs. Brindisi (D)

$13.9 million

Texas 32nd

Sessions (R)* vs. Allred (D)

$12.4 million

Toss-up (R-held)

Toss-up (R-held)

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

D

FOR

R

FOR

R

Colorado 6th

Coffman (R)* vs. Crow (D)

$12.1 million

Lean D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

*Incumbent

House races with most spending against candidates

Washington 8th

Rossi (R) vs. Schrier (D)

$14.8 million against candidates

California 48th

Rohrabacher (R)* vs. Rouda (D)

$14.7 million

Toss-up (R-held)

Toss-up (R-held)

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

New York 22nd

Tenney (R)* vs. Brindisi (D)

$13.9 million

Texas 32nd

Sessions (R)* vs. Allred (D)

$12.4 million

Toss-up (R-held)

Toss-up (R-held)

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

D

FOR

R

FOR

R

Colorado 6th

Coffman (R)* vs. Crow (D)

$12.1 million

Lean D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

*Incumbent

House races with lmost spending against candidates

California 48th

Rohrabacher (R)* vs. Rouda (D)

$14.7 million

New York 22nd

Tenney (R)* vs. Brindisi (D)

$13.9 million

Washington 8th

Rossi (R) vs. Schrier (D)

$14.8 million against candidates

Toss-up (R-held)

Toss-up (R-held)

Toss-up (R-held)

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

R

FOR

D

FOR

R

FOR

D

FOR

R

Texas 32nd

Sessions (R)* vs. Allred (D)

$12.4 million

Colorado 6th

Coffman (R)* vs. Crow (D)

$12.1 million

Toss-up (R-held)

Lean D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

D

FOR

R

FOR

R

*Incumbent

House races with most spending against candidates

Washington 8th

Rossi (R) vs. Schrier (D)

$14.8 million against candidates

California 48th

Rohrabacher (R)* vs. Rouda (D)

$14.7 million

New York 22nd

Tenney (R)* vs. Brindisi (D)

$13.9 million

Texas 32nd

Sessions (R)* vs. Allred (D)

$12.4 million

Colorado 6th

Coffman (R)* vs. Crow (D)

$12.1 million

Toss-up (R-held)

Toss-up (R-held)

Toss-up (R-held)

Toss-up (R-held)

Lean D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

AGAINST

R

AGAINST

D

FOR

D

FOR

D

FOR

R

FOR

D

FOR

R

FOR

R

FOR

D

FOR

R

FOR

D

FOR

R

*Incumbent

In the House races, the main GOP super PAC has been the biggest spender by far, doling out $138 million on the general election, followed by the Democratic Congressional Campaign Committee and the National Republican Congressional Committee.

Top spenders in House races

Spending type:

For D

Against R

For R

Against D

Congressional Leadership Fund $137.8 million

Supports House GOP candidates

$10,868,540
$126,961,367

DCCC $78.8 million

Party committee to elect Democrats to the House

$10,930,297
$67,894,784

House Majority PAC $69.6 million

Backs Democratic House candidates

$3,461,789
$66,185,600

NRCC $69.5 million

Party committee to elect Republicans to the House

$2,301,945
$67,193,280

Independence USA $37.4 million

Super PAC backed by Michael Bloomberg

$27,982,104
$9,445,880

America First Action $19.3 million

Supports President Trump's agenda

$317,781
$18,956,408

Women Vote! $13 million

Backs Democratic women candidates

$2,428,845
$10,607,804

League of Conservation Voters Victory Fund $10.7 million

Group focused on environmental issues

$649,888
$10,043,983

End Citizens United $8 million

Group that aims to get big money out of politics

$2,534,369
$5,505,958

Change Now $7.9 million

Coalition of Democratic groups

$733,872
$7,154,041
Totals include spending in special elections.

The National Republican Congressional Committee pulled its financial support for vulnerable Rep. Mike Coffman (Colo.) in mid-October, likely signaling that it thought money would be better spent bolstering candidates elsewhere.

Explore House races

Races with at least $250,000 in spending shown. Incumbent outspent

Washington 8th
Rossi (R) vs. Schrier (D)
$18.1 million spent since Jan. 2017
Lean D
California 25th
Knight (R)* vs. Hill (D)
$17.6 million
Toss-up (R-held)
Michigan 8th
Bishop (R)* vs. Slotkin (D)
$16.6 million
Toss-up (R-held)
Colorado 6th
Coffman (R)* vs. Crow (D)
$16.1 million
Lean D
California 48th
Rohrabacher (R)* vs. Rouda (D)
$15.5 million
Toss-up (R-held)
Florida 26th
Curbelo (R)* vs. Mucarsel-Powell (D)
$15.5 million
Toss-up (R-held)
New York 22nd
Tenney (R)* vs. Brindisi (D)
$14.9 million
Toss-up (R-held)
Texas 32nd
Sessions (R)* vs. Allred (D)
$14.2 million
Toss-up (R-held)
California 10th
Denham (R)* vs. Harder (D)
$13.8 million
Toss-up (R-held)
Pennsylvania 1st
Fitzpatrick (R)* vs. Wallace (D)
$13.8 million
Toss-up (R-held)
Texas 7th
Culberson (R)* vs. Fletcher (D)
$13.8 million
Toss-up (R-held)
California 45th
Walters (R)* vs. Porter (D)
$13.7 million
Toss-up (R-held)
Minnesota 1st
Feehan (D) vs. Hagedorn (R)
$13.7 million
Toss-up (D-held)
New York 19th
Faso (R)* vs. Delgado (D)
$13.4 million
Toss-up (R-held)
Maine 2nd
Poliquin (R)* vs. Golden (D)
$13.3 million
Toss-up (R-held)
New Jersey 3rd
MacArthur (R)* vs. Kim (D)
$12 million
Toss-up (R-held)
Virginia 10th
Comstock (R)* vs. Wexton (D)
$10.9 million
Lean D
Minnesota 3rd
Paulsen (R)* vs. Phillips (D)
$10.7 million
Lean D
California 39th
Kim (R) vs. Cisneros (D)
$10.6 million
Toss-up (R-held)
New Jersey 7th
Lance (R)* vs. Malinowski (D)
$10.6 million
Toss-up (R-held)
Kansas 2nd
Watkins (R) vs. Davis (D)
$10.5 million
Toss-up (R-held)
Nevada 4th
Horsford (D) vs. Hardy (R)
$10.2 million
Lean D
Nevada 3rd
Lee (D) vs. Tarkanian (R)
$10.2 million
Lean D
Illinois 6th
Roskam (R)* vs. Casten (D)
$10.1 million
Lean D
Minnesota 8th
Radinovich (D) vs. Stauber (R)
$9.4 million
Lean R
Iowa 3rd
Young (R)* vs. Axne (D)
$8.5 million
Toss-up (R-held)
Minnesota 2nd
Lewis (R)* vs. Craig (D)
$8.4 million
Lean D
Virginia 7th
Brat (R)* vs. Spanberger (D)
$8.3 million
Toss-up (R-held)
Kentucky 6th
Barr (R)* vs. McGrath (D)
$8.1 million
Toss-up (R-held)
Texas 23rd
Hurd (R)* vs. Jones (D)
$7.7 million
Lean R
Michigan 11th
Epstein (R) vs. Stevens (D)
$7.4 million
Lean D
New Mexico 2nd
Herrell (R) vs. Small (D)
$7.3 million
Toss-up (R-held)
Ohio 1st
Chabot (R)* vs. Pureval (D)
$7.1 million
Lean R
Virginia 2nd
Taylor (R)* vs. Luria (D)
$6.6 million
Toss-up (R-held)
Kansas 3rd
Yoder (R)* vs. Davids (D)
$6.6 million
Lean D
Illinois 12th
Bost (R)* vs. Kelly (D)
$6.2 million
Lean R
North Carolina 9th
Harris (R) vs. McCready (D)
$5.9 million
Toss-up (R-held)
Illinois 14th
Hultgren (R)* vs. Underwood (D)
$5.8 million
Toss-up (R-held)
Georgia 6th
Handel (R)* vs. McBath (D)
$5.2 million
Toss-up (R-held)
Illinois 13th
Davis (R)* vs. Londrigan (D)
$5.1 million
Lean R
New Jersey 11th
Webber (R) vs. Sherrill (D)
$5.1 million
Lean D
North Carolina 13th
Budd (R)* vs. Manning (D)
$4.5 million
Toss-up (R-held)
California 49th
Harkey (R) vs. Levin (D)
$4.4 million
Likely D
Florida 27th
Salazar (R) vs. Shalala (D)
$4.3 million
Lean D
New York 24th
Katko (R)* vs. Balter (D)
$4.2 million
Lean R
Florida 6th
Waltz (R) vs. Soderberg (D)
$4.1 million
Lean R
North Carolina 2nd
Holding (R)* vs. Coleman (D)
$3.8 million
Lean R
Iowa 1st
Blum (R)* vs. Finkenauer (D)
$3.6 million
Lean D
Florida 18th
Mast (R)* vs. Baer (D)
$3.6 million
Lean R
Florida 15th
Spano (R) vs. Carlson (D)
$3.3 million
Toss-up (R-held)
Washington 3rd
Beutler (R)* vs. Long (D)
$3.2 million
Lean R
West Virginia 3rd
Miller (R) vs. Ojeda (D)
$3.2 million
Lean R
Michigan 6th
Upton (R)* vs. Longjohn (D)
$3.1 million
Lean R
Wisconsin 1st
Steil (R) vs. Bryce (D)
$3.1 million
Lean R
Arizona 2nd
Peterson (R) vs. Kirkpatrick (D)
$2.9 million
Lean D
Pennsylvania 10th
Perry (R)* vs. Scott (D)
$2.8 million
Toss-up (R-held)
Utah 4th
Love (R)* vs. McAdams (D)
$2.8 million
Toss-up (R-held)
Arizona 1st
O'Halleran (D)* vs. Rogers (R)
$2.4 million
Lean D
Virginia 5th
Riggleman (R) vs. Cockburn (D)
$2.4 million
Lean R
Pennsylvania 7th
Nothstein (R) vs. Wild (D)
$2.2 million
Lean D
California 12th
Pelosi (D)* vs. Remmer (R)
$2.1 million
Solid D
Nebraska 2nd
Bacon (R)* vs. Eastman (D)
$2 million
Lean R
California 21st
Valadao (R)* vs. Cox (D)
$1.9 million
Likely R
Arkansas 2nd
Hill (R)* vs. Tucker (D)
$1.7 million
Likely R
Ohio 12th
Balderson (R)* vs. O'Connor (D)
$1.4 million
Toss-up (R-held)
Maryland 6th
Trone (D) vs. Hoeber (R)
$1.3 million
Solid D
New York 1st
Zeldin (R)* vs. Gershon (D)
$1.3 million
Likely R
Florida 16th
Buchanan (R)* vs. Shapiro (D)
$1.3 million
Lean R
Florida 7th
Murphy (D)* vs. Miller (R)
$1.2 million
Likely D
Georgia 7th
Woodall (R)* vs. Bourdeaux (D)
$1.1 million
Lean R
Pennsylvania 17th
Rothfus (R)* vs. Lamb (D)*
$1 million
Likely D
California 43rd
Waters (D)* vs. Navarro (R)
$1 million
Solid D
New Jersey 5th
Gottheimer (D)* vs. McCann (R)
$1 million
Likely D
Pennsylvania 16th
Kelly (R)* vs. DiNicola (D)
$913,000
Lean R
New Jersey 2nd
Grossman (R) vs. Van Drew (D)
$904,000
Likely D
South Carolina 1st
Arrington (R) vs. Cunningham (D)
$868,000
Lean R
California 22nd
Nunes (R)* vs. Janz (D)
$861,000
Likely R
New Hampshire 1st
Pappas (D) vs. Edwards (R)
$830,000
Likely D
Arizona 9th
Stanton (D) vs. Ferrara (R)
$826,000
Solid D
New York 11th
Donovan (R)* vs. Rose (D)
$693,000
Lean R
California 4th
McClintock (R)* vs. Morse (D)
$691,000
Likely R
Texas 21st
Roy (R) vs. Kopser (D)
$689,000
Likely R
Pennsylvania 8th
Cartwright (D)* vs. Chrin (R)
$648,000
Likely D
New York 14th
Ocasio-Cortez (D) vs. Pappas (R)
$633,000
Solid D
Oklahoma 5th
Russell (R)* vs. Horn (D)
$542,000
Likely R
West Virginia 1st
McKinley (R)* vs. Fershee (D)
$505,000
Solid R
Montana At-large
Gianforte (R)* vs. Williams (D)
$479,000
Lean R
Iowa 4th
King (R)* vs. Scholten (D)
$466,000
Lean R
California 50th
Hunter (R)* vs. Campa-Najjar (D)
$465,000
Lean R
Ohio 14th
Joyce (R)* vs. Rader (D)
$432,000
Likely R
Texas 2nd
Crenshaw (R) vs. Litton (D)
$413,000
Likely R
Wisconsin 6th
Grothman (R)* vs. Kohl (D)
$384,000
Likely R
Florida 25th
Diaz-Balart (R)* vs. Flores (D)
$348,000
Lean R
New York 23rd
Reed (R)* vs. Mitrano (D)
$347,000
Likely R
Ohio 7th
Gibbs (R)* vs. Harbaugh (D)
$324,000
Solid R
North Dakota At-large
Armstrong (R) vs. Schneider (D)
$315,000
Solid R
Florida 19th
Rooney (R)* vs. Holden (D)
$299,000
Solid R
California 18th
Eshoo (D)* vs. Russell (R)
$284,000
Solid D
Pennsylvania 6th
McCauley (R) vs. Houlahan (D)
$274,000
Likely D

*Currently in Congress. Ratings for House races from the Cook Political Report.

Races with spending under $250,000 not shown above: Ariz.-8, Tex.-31, Ind.-9, Pa.-11, Wash.-5, Calif.-16, Fla.-17, Mich.-1, Calif.-24, Kan.-1, Pa.-4, Ohio-15, Mo.-2, Mich.-7, N.Y.-21, Nev.-2, Ind.-2, La.-1, Calif.-46, S.D.-AL, Ill.-16, Calif.-7, Maine-1, Tex.-22, Pa.-5, S.C.-4, Fla.-9, Tex.-6, Tex.-29, Calif.-8, N.Y.-3, Ore.-5, Wis.-5, Ariz.-6, Minn.-7, Wis.-8, Md.-1, N.J.-4, Calif.-1, Wash.-4, N.Y.-27, S.C.-5, Colo.-4, Calif.-36, Pa.-14, Fla.-12, Idaho-1, Ohio-13, Ohio-10, Tex.-10, Minn.-5, Conn.-5, Calif.-38, Calif.-26, Tex.-15, Minn.-6, Calif.-31, N.C.-5, Va.-6, Ind.-3, Tex.-1, Tex.-25, Colo.-5, N.M.-1, Ariz.-4, Ind.-8, Ind.-6, Fla.-3, Fla.-10, Fla.-4, Va.-1, Calif.-34, Mo.-4, Ind.-4, Kan.-4, W.Va.-2, Minn.-4, Colo.-3, Ariz.-3, N.H.-2, N.J.-6, Wash.-9, N.C.-8, Tenn.-6, Alaska-AL, Pa.-12, Tex.-16, Tenn.-7, Tenn.-3, N.Y.-18, Iowa-2, Mass.-1, Wash.-6, Tenn.-2, Mo.-5, Wash.-1, Wash.-7, Miss.-4, Wash.-2, Mo.-3, Colo.-2, Miss.-1, Wis.-7, Mo.-8, Mo.-6, Wash.-10, Pa.-15, Pa.-13, Mo.-7, Tenn.-8, Tenn.-1, Tenn.-4, Conn.-3, Ohio-6, Ohio-4, Ohio-5, Calif.-17, Calif.-20, Mich.-2, Fla.-20, Fla.-22, Fla.-13, Mich.-10, Mich.-4 and Ohio-16. Races with no independent spending not listed.

About this story

Spending data comes from the 24- and 48-hour reports filed with the Federal Election Commission between Jan. 1, 2017, to Nov. 4, 2018. It includes independent expenditures made in support or opposition to a candidate in the general election. The data does not include expenditures by candidates.

To determine the vulnerability of a House seat, we used the Cook Political Report's race ratings. The Washington Post's own ratings were used for Senate seats. Ratings shown are as of Nov. 5.

Originally published Oct. 22, 2018.

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