Every uncalled 2024 election race was left behind in the battle for control in Washington

Former President Donald Trump has won a second term in the White House and his Republican Party has gained control of the Senate. But control of the House of Representatives is still up for grabs, as is the size of the coming majority in the Senate.

In the battle for the House of Representatives, Democrats face an uphill climb to gain the four seats needed to flip the chamber, while Republicans only need to win a handful of more competitive races to hold on to the majority . With more than a dozen House races still uncalled and many appearing close, Democrats would need to keep all their competitive seats and flip a few Republican-held seats to reach the 218 seats needed for the majority.

With votes still being counted, here’s a look at the key races not yet called by the NBC News Decision Desk (read more about what those breeds are called). While some battleground states can be projected relatively quickly, it could take days or even weeks for control of the House of Representatives to be resolved.

Presidential battlefields

With Trump’s victory in Michigan projected by NBC News on Wednesday afternoon and a victory in Nevada early Thursday morning, only one battleground state remains uncalled.

In the Sun Belt, Trump has the lead in Arizona, but the state is too close to call.

The Senate has yet to call

Arizona Senate: The Democratic Rep. Ruben Gallego leads Republican Kari Lake in vote counting, but the race is still too early to call. Lake is trailing Trump’s margin in the state, while Gallego is outperforming Vice President Kamala Harris. Gallego, a Marine veteran, touted his military service in his race against Lake, a former local TV news anchor. Lake ran unsuccessfully for governor in 2022, and she falsely claimed her 2022 race was influenced by voter fraud.

Nevada Senate: Republican Sam Brown, a military veteran who was wounded in combat, is in a very close race against Democratic Senator Jacky Rosen, who is seeking her second term in the Senate. Nevada was closely divided in recent elections, with Republican Joe Lombardo flipping the governor’s mansion in 2022 while Democratic Sen. Catherine Cortez Masto won reelection. But while Democrats hoped the state’s abortion referendum could increase turnout for Democratic candidates, the margin in the race remains extremely tight.

Pennsylvania Senate: Although Trump is expected to win Pennsylvania, the Senate race there is still too close to call. Democratic Senator Bob Casey is running for a third term against Republican Dave McCormick, a former hedge fund CEO who unsuccessfully ran for the Republican Senate nomination in 2022.

House control on the line

Checking the house Part of what is still unclear is that more than 20 competitive races will not be called, including several key races in California alone. There are also other races that are not expected to be competitive but have not yet been projected because few votes have been counted.

Alaska in the major district: Republicans want to take over this statewide seat that Trump can easily take. Republican Nick Begich leads Democratic Rep. Mary Peltola, but he is floating around the 50% threshold needed to win the race outright. If he doesn’t reach that threshold, the race will go down to a ranked-choice vote, but Republicans are confident they will still retain the seat in that scenario.

Arizona’s 1st District: Republican Rep. David Schweikert is in a competitive race in suburban Phoenix against Democrat Amish Shah, a former state lawmaker.

Arizona 6th District: Republican Rep. Juan Ciscomani is trailing his Democratic opponent, former Sen. Kirsten Engel, in this competitive suburban Tucson district.

California’s 9th District: Democratic Rep. Josh Harder narrowly leads his Republican opponent, Stockton Mayor Kevin Lincoln.

California’s 13th District: Republican Rep. John Duarte is locked in a tight race against Democrat Adam Gray, a former state lawmaker, in this Central Valley district.

California’s 21st District: Democratic Rep. Jim Costa is in a close race with Republican Michael Maher, a former FBI agent, in this Fresno-area district.

California’s 22nd District: Republican Rep. David Valadao, one of two remaining Republicans in the House of Representatives who voted to impeach Trump after the Jan. 6, 2021, Capitol riot, is leading his Democratic opponent, former lawmaker Rudy Salas.

California’s 27th District: Republican Rep. Mike Garcia is in a tight race against Democrat George Whitesides, former NASA chief of staff and CEO of Virgin Galactic, in this Southern California district.

California’s 41st District: Democrats have targeted this Riverside County district, and Republican Rep. Ken Calvert is in a competitive race with Democrat Will Rollins, a former prosecutor.

California’s 45th District: GOP Rep. Michelle Steel leads Democratic Army veteran Derek Tran in one of the nation’s most expensive races.

Speaker of the House of Representatives Mike Johnson sounds the gavel before the State of the Union address to the joint session of Congress at the U.S. Capitol on Thursday, March 7, 2024. — House Speaker Mike Johnson, R-La., wants to lead the House majority for a full term.Bill Clark / CQ-Roll Call, Inc via Getty Images file

California’s 47th District: Republicans want to flip this open seat in Southern California, and Republican Scott Baugh, a former state lawmaker, is in a competitive race against former state Sen. Dave Min.

California’s 49th District: Also in Southern California, Democratic Representative Mike Levin is in a tight race against car dealer Matt Gunderson, a Republican who calls himself “pro-choice.”

Colorado’s 8th District: Democratic Rep. Yadira Caraveo is locked in a close race in suburban Denver against Republican state Rep. Gabe Evans.

Iowa’s 1st District: Just a few hundred votes separate Republican Mariannette Miller-Meeks and Democrat Christina Bohannan, a former state representative. It’s familiar territory for Miller-Meeks, who won her 2020 race by just six votes.

Maine’s 2nd District: Democratic Rep. Jared Golden has been a top GOP target, hovering just above the 50% threshold that would allow him to win outright against Republican state Rep. Austin Theriault, a former NASCAR driver (the state holds ranked-choice elections choice) .

Ohio’s 9th District: Democratic Rep. Marcy Kaptur is locked in an extremely close race with Republican state Rep. Derek Merrin.

Oregon’s 5th District: Democrat Janelle Bynum narrowly leads Republican Rep. Lori Chavez-DeRemer.

Washington’s 3rd District: The Democratic Rep. Marie Gluesenkamp Perez leads Republican Joe Kent, whom she defeated by less than 1 point in 2022.

Washington’s 4th District: Republican Rep. Dan Newhouse narrowly leads Republican former NASCAR driver Jerrod Sessler. (The Washington primaries push the top two voters to the general election, regardless of party.)

Sessler has Trump’s support over Newhouse, one of two Republicans remaining in the House of Representatives who voted to impeach Trump after the election. January 6, 2021, Capitol riot.