Most voters say their midterm minds are already made up, a new poll finds, but enough remain movable to swing tight Senate and House races.

A recent Economist/YouGov weekly survey shows a clear majority of Americans have settled on their candidates for the November 3 midterms, yet a meaningful slice of the electorate, especially independents, could still shift the outcome in close contests.

The poll, taken October 10, 12, 2026, asked voters with Senate races in their states and voters facing House races whether their minds were made up or whether they would still consider someone else. The results point to firm bases and a smaller but decisive pool of voters who are not locked in. Breitbart News reported the figures as Election Day draws closer.

Over three-quarters of respondents with a Senate race, 78 percent, said their mind is “made up.” Ten percent said they would “consider voting for a different candidate.” Seven percent remain undecided. The margin of error is ±3.5 percent, adjusted for weighting.

Party bases look firm; independents leave the door open

Party loyalty shows up clearly in the Senate numbers. Eighty-nine percent of Democrats, 77 percent of Republicans, and 69 percent of independents said their mind is made up.

Among independents, 11 percent said they would consider voting for a different candidate, and 12 percent said they remain undecided. That softer independent bloc is where late movement often decides toss-up seats.

The survey put the Senate question this way:

"In the election for U.S. Senator from [state], would you consider voting for a different candidate, or is your mind made up?"

House numbers run in the same direction. Across the board, 80 percent said their mind is made up on the congressional race in their district. Seven percent said they would consider voting for another candidate. Eight percent remain undecided.

That combined 15 percent who are either open to a switch or still undecided is more than enough to flip tight districts. Independents again look softer: 15 percent remain undecided on the House race, and eight percent said they would consider another candidate.

The House version of the question was straightforward:

"Would you consider voting for a different candidate, or is your mind made up?"

Voters expect Democrats to gain ground on the Hill

Asked who will control Congress after the election, respondents leaned toward the Democrats. Forty-three percent believe Democrats will have control of the House, compared with 30 percent who believe Republicans will hold it.

On the Senate side, 40 percent believe Democrats will take control, while 35 percent believe Republicans will maintain control. A quarter of respondents said they are not sure who will run the upper chamber.

Those expectations sit against a map that still has real fight left in it. The Cook Political Report currently lists seven Senate races as toss-ups between Democrats and Republicans: Alaska, Iowa, Kansas, Maine, Michigan, Ohio, and Texas.

Cook also lists 21 congressional races as toss-ups, six blue seats and 15 red seats, plus 21 more races rated lean Democrat or lean Republican. In short, the majority may feel decided, but the seats that decide majority control remain contested.

Ohio sits at the center of a still-tight map

One of those Senate toss-ups is Ohio, where Republican Sen. Jon Husted faces Democrat Sherrod Brown in a race described as particularly neck and neck. That contest alone is enough to keep both parties focused on the final stretch.

Husted has already been a frequent target of partisan floor fights in Washington, including the clash captured when Democrats blocked his bill aimed at shielding homes from data-center power cost hikes.

President Trump has kept up his midterm blitz as Election Day nears. He has held rallies for key races in states such as Ohio and Alaska this week, with more stops planned in Georgia, Kentucky, Kansas, and North Carolina.

That travel schedule matches the Cook toss-up list and underscores where late persuasion still matters. Conservatives watching the calendar have heard the same message elsewhere: midterm majorities often come down to whether the base shows up, a point Ted Cruz has stressed on turnout.

Washington drama keeps the stakes high

The poll lands in a capital already thick with pre-election conflict. A lame-duck Democrat’s move to push a long list of impeachment articles against Trump is one more reminder that the midterm fight is not only about local races.

Readers following that thread can see the same intensity in coverage of the 26 impeachment articles filed ahead of the midterms. Institutional battles have not paused for campaign season.

House Republicans have kept pressure on the courts as well. One recent filing sought to impeach a federal judge who blocked Trump’s termination of Temporary Protected Status for Somalis, another marker of how raw the fight over executive power remains.

That same climate of high-stakes conflict shows up in the impeachment resolution against the judge who halted the TPS action. Separate from the poll, the Supreme Court has also continued to weigh in on Trump-related disputes, including campaign rules.

Voters who want the broader legal backdrop can track how the Supreme Court again backed Trump in the campaign ad-rates fight. None of that replaces the basic math in the Economist/YouGov numbers: most people say they know whom they will support, but the movable share is still large enough to decide a close night.

Firm majorities do not equal a settled map

Put the pieces together and the picture is straightforward. Large majorities of Democrats and Republicans say they are locked in. Independents are less settled. Cook’s seven Senate toss-ups and 21 House toss-ups still sit on the board. Trump is campaigning in the states that match those ratings. And public expectations already tilt toward Democratic gains in both chambers, even while a quarter of voters say they do not know who will control the Senate.

The survey does not measure enthusiasm, turnout, or late-breaking events. It measures self-reported firmness of choice weeks before November 3. On that measure, the electorate looks mostly decided, with just enough doubt left among independents and in the toss-up column to keep both parties working the final stretch.

Majorities can feel settled on paper and still leave the majority up for grabs on election night. The voters who have not closed the door will draft the last chapter.