Election Countdown: The 6 congressional races to watch

While eyes around the globe will be on the US presidency this Election Day, there are consequential races further down the ballot that will determine how much power Kamala Harris or Donald Trump will wield. A handful of Senate and House races will decide which party has the power to advance or stymie the next president’s agenda.

Going into election night, 538 forecasters give Republicans a 92% chance of winning the Senate, but experts say the House could be anyone’s game. The Senate is likely to be called on election night, but because of slow counting in California, the results in the House are unlikely to be called before the end of the week at the earliest.

Here are the key races to watch.

Senate

Democrats currently hold a narrow 51-49 majority but are facing an almost certain loss in West Virginia. That means that Republicans only need to capture one more race to win the majority. This is a pretty comfortable spot for the GOP to be in. Meanwhile, Democrats rely on dramatically outperforming in the polls or performing miracles and expanding their map by winning states like Texas or Florida.

Thirty-four seats are up for grabs, and 10 races are expected to determine the balance of power: Michigan, Ohio, Pennsylvania, Wisconsin, Arizona, Nevada, Montana, Nebraska, Maryland, and Texas.

Arizona offers a race of political extremes. Independent Sen. Kyrsten Sinema is stepping down, and progressive Rep. Ruben Gallego and Trump-darling Kari Lake are vying to take her spot. Lake, who lost the governor’s race in 2022 and continues to insist the election was “stolen,” has been encroaching on Gallego’s lead in the polls in recent days. Gallego’s slight edge is being attributed to his popularity among Latino voters, who make up 25% of the electorate.

Michigan, meanwhile, is a competition between centrists. Democratic Sen. Debbie Stabenow is retiring, and mainstream Republican Mike Rogers – a former Trump critic who has since embraced him – is facing outgoing Rep. Elissa Slotkin, who is using her national security background to win over centrists in and around Detroit.

The race has been tied in the final weeks of the election, and some of the biggest issues are reproductive rights and the candidates’ support for electric vehicles – a hot topic in a state that is home to the Big Three auto manufacturers.

In Ohio, Sen. Sherrod Brown, the Democratic incumbent, is fighting to keep his seat in the solidly red state against Trump-backed Bernie Moreno. Brown has lost what was once a commanding lead in recent weeks and is now polling behind Moreno by one point. The race has drawn $500 million in ad spending, more than any Senate race in history.

Control of the Senate could very well hinge on this state, which has voted twice for Trump and is likely to do so for a third time this year. Brown has held on to power in the past by focusing on local issues and evading questions about national political figures but has suffered from attack ads framing him as being far-left on transgender issues. But Democrats need this state if they have any chance of keeping their majority.

House of Representatives

Control of the House, like everything in this election, is expected to be incredibly close. All 435 seats are on the line, and, likely, whichever party wins control will do so by just a few seats. The Republicans are on the defense and need to control their slim majority, while Democrats need to gain four seats to flip the chamber. Democrat’s lead has declined as the election approached, with their margin slipping to just 0.5 points over the Republicans, down from 2.6 in early September.

New York’s 19th district is one of the most expensive House races in the 2024 election, with Democrats seeing flipping the seat as key to their efforts to regain control of the House. Republican incumbent Marc Molinaro faces a rematch against Democrat Josh Riley in this swing district that stretches across all or parts of the 11 upstate counties. It is expected to be a bellwether for how the parties are performing in the suburbs of New York and New Jersey, where Democrats saw disappointing turnout in the 2022 midterms, which led to them losing the seat.

Molinaro, once known as one of the most bipartisan members of Congress, has veered to the right this cycle, with his campaign drawing on fears about immigration and crime, while Riley has focused on abortion and reproductive rights.

Virginia’s 7th district is worth watching because it is expected to be an early bellwether of how the parties are fairing in a mixed district that spans from the DC suburbs to the rural Piedmont region. Republican Derrick Anderson is currently down four points against Democrat Yevgeny “Eugene” Vindman, who led the whistleblower account of the quid-quo-pro phone call between Trump and Volodymyr Zelensky that became the basis of the first impeachment case against Trump.

In Nebraska’s 2nd district, incumbent Republican Don Bacon is currently beating Democrat Tony Vargas by just two points. That's the same margin the GOP won by in 2022, and the Dems have had their eyes on winning it back ever since.

The district is one of 16 Republican-held seats in places that voted for Joe Biden in 2020. It is also known as the “blue dot” because it often sends one of Nebraska’s electoral votes to the Democrats even as the rest of the states’ votes go to Republicans.

Check out more of our recent election coverage:

• Everything you need to know about the 7 swing states
• The 15 counties to watch on election night
• The Disinformation Election: How conspiracy theories are impacting the vote
• How the 2024 presidential election could define the future of the Supreme Court
• Each presidential candidate needs at least 270 electoral votes to win the election. As the results come in, keep track of them with our handy map! Download it here

.