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Undecided races of the 2024 election: Live results and analysis

We're tracking unresolved races in the Senate, House and more.

Former President Donald Trump has won back the White House, and Republicans have won control of the U.S. Senate and House of Representatives. But we still don't know how big the GOP's Senate and House majorities will be, since there are still several races that don't have a projected winner. The outcomes of these elections could have major implications for how easy it will be for Trump to enact his second-term agenda.

However, it could be a while before we know who won these races. California — home to multiple undecided House races — is still working through counting all its ballots. Other races will require ranked-choice voting to resolve. And still others, like Pennsylvania's Senate race, could go to a recount.

We at 538 will be tracking it all on this live blog dedicated to all the outstanding races of the 2024 election. Join us for live updates, analysis and commentary until the last major race is decided.


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An update on the math for House control

As of this post, we have projections in 412 of the House's 435 seats. When we also add in two unprojected races in which the leading candidates are from the same party, that number grows to 414 (two Democrats are facing off in California's 34th District and two Republicans in Washington's 4th District). Among those seats, Republicans have a 212-to-202 seat edge, leaving the GOP needing six of the remaining 23 seats to secure the minimum 218 seats for a majority (they current control 221).

Looking at the 21 other seats, 10 of them are in California, which will not finish tallying its votes for some time to come. Out of those, four have Democratic incumbents in them who are, on balance, more likely than not going to win, as may Republican Rep. David Valadao (who is currently leading by 10 percentage points in California's 22nd District). So just to play out where things may be, let's add four to the Democratic total and one to the GOP and leave the other five California seats up in the air, which puts the math at 213-206 Republican. Democrats also have leads in Maine's 2nd District, Arizona's 4th District, Oregon's 5th District and Washington's 3rd District that look more likely than not to hold up. The same is true of Republicans' edges in Colorado's 3rd District and Arizona's 1st. If we assign those still-unprojected seats, that makes it 215-210 Republicans with 10 seats left.

As such, it seems like the range for Republicans is something like 216 to 223 and around 212 to 219 for Democrats, which means there is still a slim chance for Democrats to reach a majority. All told, then, the most likely outcome may be a ever-so-slightly smaller Republican majority than their current 221-to-214 advantage. Still a lot left to play out in those unprojected seats, though.


Maine's 2nd District will be decided in an instant runoff

Late last night, the Maine secretary of state announced that no candidate for Maine's 2nd Congressional District had gotten a majority of first-place votes, so the race will be decided in an instant runoff next week. (Maine uses ranked-choice voting, whereby voters rank candidates in order of preference, the candidate with the fewest first-place votes is eliminated and that candidate's votes go to whoever their voters ranked second on their ballots. This process repeats until one candidate gets a majority.)

The secretary of state also released final results for voters' first choices in the race: Democratic. Rep. Jared Golden got 196,189 first-place votes, Republican Austin Theriault got 194,030, write-in candidate Diana Merenda got 420, and 12,635 voters did not mark a first-place vote. Interestingly, that means Golden got a majority of first-place votes, but not a majority of all ballots cast — and that's enough to trigger the instant runoff (although Golden's campaign has formally lodged an objection to this). That's because, theoretically, someone could have left their first choice blank but voted for Golden or Theriault as their second choice, which might affect the final numbers. However, according to FairVote, only 6% of ballots that didn't mark a first choice in the 2022 race for this seat marked a second choice, and in 2018, it was only 9%. That suggests it's very unlikely that there are enough "hidden" second-place votes to vault Theriault ahead of Golden.


Abortion measures and a Trump presidency

On Tuesday, voters in Arizona, Colorado, Maryland, Missouri, Montana, New York and Nevada passed measures that would enshrine abortion rights in their state constitutions, making abortion a winning issue in 7 of the 10 states where it was on the ballot. But voters in Missouri, Montana and Nevada also voted to send Trump, who appointed the judges who overturned Roe v. Wade, back to the White House. The presidential race has yet to be projected in Arizona, but Trump leads there, too.

An April survey by nonpartisan research firm PerryUndem found that 35% of Trump voters would at least lean toward voting for a constitutional amendment that protected the right to abortion in their state. That was especially true of Trump voters who were women, younger, described themselves as liberal or moderate, or were voters of color.

A poll from September from The New York Times/Siena College also suggested that many of these voters also don't think Trump would try to restrict abortion nationwide if elected: 49% of all likely voters and just 27% of Republicans in that poll thought he would. So many voters may simply feel that voting to protect abortion in their state is sufficient, and that Trump will not make good on Republican calls for a national ban.

“The bottom line in my view is … Abortion rights and access is more popular than Trump. It’s more popular than Harris. It’s more popular than the Democratic Party or the Republican Party,” said Tresa Undem, a cofounder of PerryUndem. “But, among Trump voters, it wasn’t the driving issue for voting for Trump.”

Some Republicans have waffled on whether they would try to ban abortion nationally. A 538 analysis of this year's GOP primaries found that in swing states and toss-up districts, Republican candidates were much less likely to mention abortion and more likely to say the issue was best left up to the states, while candidates in red states and solid Republican districts were very likely to support a national ban. The GOP left the endorsement of a national ban on abortion off their platform this year for the first time in nearly 40 years, and House Republicans in the current Congress did not pursue one either (though it was a moot issue since it wouldn't have passed in a Democratic Senate). But Trump has flip-flopped on a national abortion ban in the past, even as it remains a key goal of anti-abortion advocates nationwide. Such a ban by a newly elected Republican Senate, House and president (assuming House Republicans remain on track to hold their majority) could render the state-level initiatives that have passed since Roe was overturned useless — though it's far from certain that they would pursue or be able to pass such an unpopular policy.


Surprising stasis as Pennsylvania Democrats hold General Assembly

The 2022 elections for the Pennsylvania General Assembly were the first with new legislative maps, and the Democrats won control of the state's lower legislative chamber that year by the thinnest of margins — a single seat. They hadn’t previously controlled the chamber since 2010.

This year, Pennsylvania’s rightward shift at the top of the ticket was very closely watched nationwide. But with conservative Democrat Frank Burns from Cambria County holding his seat, the Democrats have now managed to hold on to the General Assembly by the exact same razor-thin margin as in 2022. With the statewide vote shifting to the GOP, it's remarkable that the balance of power in the General Assembly is unchanged.

While ballots are still being counted in Pennsylvania’s 2024 Senate race, Republican Dave McCormick has a lead of half a percentage point at present — a notable shift from 2022, when Democratic Senate candidate John Fetterman beat Mehmet Oz by almost 5 percentage points. Republicans did even better downballot in Pennsylvania — the GOP's attorney general candidate prevailed statewide by almost 5 percentage points, and their candidates for auditor general and state treasurer did even better.

While this surprising stasis requires more analysis, I suspect that the distribution of Republican votes was part of the story. Higher turnout in rural, GOP-leaning parts of the state might not have helped GOP House candidates even as it may have put Trump and quite possibly McCormick over the top.