How redistricting is shaping the 2022 U.S. House map

correction

A previous version of the chart showing how new districts voted for president in 2020 miscalculated the change from current to new districts. Also, the existing boundaries for North Carolina were incorrect. They have been corrected.

The march to the 2022 midterm elections is on, as states completed their new congressional maps following the 2020 Census. As of June 7, all 50 states have settled on the boundaries for 435 U.S. House districts.. Each state has a different process for drawing maps and state lawmakers or independent commissions will need to approve new maps before the primary election cycle.

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Democrats narrowly control the U.S. House, so both parties are going to great lengths to tip districts in their favor. Republicans have already drawn advantageous lines in Texas, North Carolina and Ohio. Democrats control fewer districts overall but have used Illinois and Oregon to make gains so far.

How new congressional districts approved so far voted for president in 2020

Strong Biden

15 or more points

Current districts
in these states

161

-1 seat

Lean Biden

5 to 15 points

50

+10

Close

Within 5 points

34

-18

Lean Trump

5 to 15 points

47

-5

Strong Trump

15 or more points

143

+14

Many state legislatures are approving maps that eliminate competition in favor of more solidly Republican or Democratic districts. Approved maps are already facing legal challenges that could delay their use or lead to court-mandated changes. In the last redistricting cycle, legislative deadlocks and legal challenges resulted in many districts eventually being determined by courts.

Maps that have been struck down

The Supreme Court in early February put on hold a lower court’s order that Alabama must create a second congressional district favorable to Black voters, over the objections of Chief Justice John G. Roberts Jr. and the court’s three liberals.

The North Carolina Supreme Court ruled on February 4 that political district maps drawn by the Republican-controlled state legislature were unconstitutional and must be redrawn. On Feb. 23, a three-judge panel rejected a new map passed by Republican lawmakers and instituted a replacement map.

The Ohio Supreme Court ruled that the congressional map enacted by Ohio’s Republican legislature in November violated the partisan-fairness requirement. On March 2, Republicans on the Ohio Redistricting Commission approved a remedial map.

Maryland Gov. Larry Hogan agreed on April 4 to sign into law the state’s new congressional map. A previous version of the map was struck down by a judge who found it to be the “product of extreme partisan gerrymandering.”

Explore the map

The Washington Post is using the number of Trump and Biden voters within old and new district boundaries, according to data collected by Decision Desk HQ, to show how the districts have changed politically. As more states finalize their maps, we’ll add them to this page to give a fuller picture of what to expect in the midterms.

Look up your address to see if district boundaries will shift in your community, or click the districts we’ve suggested and toggle between the old and new lines.

Tex. 23rd

Lawsuit filed over Latino representation

Ill. 13th

Dems. packed in to erase competition

Tenn. 5th

Nashville Dem. stronghold eliminated

Mont. 1st

State gets a second district

N.M. 2nd

Biden voters near Albuquerque swing district

Current districts
New districts

Hover over a district to view details

The map above shows which states have approved maps so far, paired with the most detailed presidential election results available from 2020. The darkest red areas represent the precincts or counties where Donald Trump won many more votes than Joe Biden. In the darkest blue areas, Biden won many more votes. Yellow areas are the most politically divided areas of the country — the presidential vote margin for those was less than five points.

Though Democrats performed well in 2020 at the presidential level, these results are not necessarily predictive for how districts will vote in 2022. There are also districts in the current map that voted for opposing parties for president and U.S. House.

Harry Stevens contributed to this report.

About this story

The Post estimated the lean of current congressional districts and those approved so far for the 2022 elections using 2020 presidential results by precinct from Decision Desk HQ and estimates where actual votes at the precinct level were unavailable. In counties where more than 1 percent of the actual vote was not available by precinct, the map visualizes the actual votes at the county level. New Jersey results are at the township level.

Vote estimates have been used to calculate the lean of districts in all of Alabama, Alaska, Louisiana, Rhode Island and Virginia, and parts of Florida, Idaho, Kentucky, Michigan, Missouri, New Jersey, New York, North Carolina, Oklahoma, Pennsylvania, South Carolina, South Dakota and Tennessee because detailed results are not available.

Editing by Kevin Uhrmacher. Copy editing by Frances Moody.

Adrián Blanco Ramos is a graphic reporter in the graphics department at The Washington Post. He previously worked at Spanish newspaper El Confidencial focusing on data visualization, data analysis and investigative journalism. He participated in the International Consortium of Investigative Journalist’s Paradise Papers investigation.
Kevin Schaul is a senior graphics reporter for The Washington Post. He holds corporations accountable using data and visuals.
Ashlyn Still is a projects editor focused on election results data and visuals. She previously covered elections and politics as a graphics reporter.