Rep. Tom Cotton (R), who won Tuesday's Senate election in Arkansas, takes a selfie with campaign volunteer Aubrie Brister at a campaign office on November 2, 2014 in Bentonville, Arkansas. (Photo by Justin Sullivan/Getty Images
  • With Rep. Tom Cotton's Senate victory in Arkansas, the state has two Republican senators for the first time since 1879. Cotton is one of the first Iraq War veterans elected to the Senate — along with Joni Ernst, who was also elected this week. The 37-year-old will be the youngest senator, currently.
  • For the first time ever, more than 100 female legislators will be voting in the next session of Congress.
  • With Rep. Shelley Moore Capito's Senate victory in West Virginia, the state has it's first female senator. She is also the first Republican senator the state has had since 1959.
  • Pennsylvania Gov. Tom Corbett (R-Pa.) is the first governor in the state to not win two terms since the Constitution was changed to allow it in 1968.
  • Elise Stefanik, who won the House race in New York's 21st District, is the youngest woman ever elected to Congress. She is 30.
  • Mia Love, who won the House race in Utah's 4th District, is the first black woman to be elected as a Republican representative.
  • Will Hurd, who won a House race in Texas, became the first black Republican to win a federal election in the state since Reconstruction.
  • Joni Ernst, who won the Iowa Senate race, will be the first woman elected to federal office in that state.
  • Gina Raimondo, who won the Rhode Island gubernatorial race, will become the state's first female governor, and the first Democrat the state has elected since 1992.
  • Greg Abbott, who won the Texas gubernatorial race, will be the first governor elected while in a wheelchair in 32 years; George Wallace was in a wheelchair when he won his last term in Alabama in 1982.
  • Sen. Tim Scott (R-S.C.), who won his campaign for a South Carolina Senate seat after being appointed last year, became the first black senator to win an election in the South since Reconstruction.
  • Cecilia Abbott will become Texas's first Hispanic first lady.
  • Yumi Hogan will become Maryland's first Asian-American first lady.
  • Maura Healey (D) won the race to become Massachusetts's next attorney general. She will be the first openly gay attorney general. 
  • Wisconsin Gov. Scott Walker (R) became the first governor to survive a recall and get re-elected. He's won three elections in four years.
  • George P. Bush is the first grandson of George H.W. Bush to win elected office. He is also the first Bush, as CBS News points out, to win his first political race.
  • Saira Blair won a seat in West Virginia's House of Delegates. She is the youngest state legislator in the nation, at 18.
  • Charlie Crist lost his third election in Florida -- but his first as a Democrat. He is also most definitely the first former governor to lose races as a Democrat, Republican (the 1998 Senate race) and independent (the 2010 Senate race).
  • The first time the Republican Party has had the Senate majority in eight years.
  • With the loss of Rep. John Barrow (D-Ga.), for the first time in a long time there are no white House Democrats left in the Deep South.

And now, a few more, from the Twitters:

Correction: A previous version of this post said that Will Hurd was the first black Republican to win election in Texas since Reconstruction. He is the first black Republican to win a federal election in Texas since Reconstruction. The sentence describing the number of women in Congress has been changed to clarify that it is the first time that more than 100 women will have a vote in Congress at one time — the largest number in history. We also added Joni Ernst to the list of first Iraq War veterans — there are two this year!

This post has been updated.