Political Psychology · Commentary & Analysis

Subscribe →

Nineteen Days Out: The Midterm Polls Are Shifting. The Psychology of Why Late Races Move

Editorial illustration of U.S. Capitol with election polling charts and a vote button representing shifting polling trends in key U.S. midterm races three weeks before Election Day.

In brief: As of October 15, Democrats lead the generic congressional ballot by about eight points, and Fox News rates the Senate 47–47 with six toss-ups. The national tide is steady, but several key Senate races have tightened in the last two weeks. Late movement is normal: partisans “come home,” undecided voters break, and a lead inside the margin of error is not a lead anyone should bank on. Polls are snapshots, not predictions.

Where do the midterm polls stand 19 days out?

This follows our four-weeks-out roundup. The national picture has barely moved since then. The RealClearPolitics average of polls taken September 24 through October 13 shows Democrats ahead 50% to 42%. The latest Fox News poll (October 9–12) has them up 54% to 45%; Morning Consult (October 5–11) has them up seven.

For comparison, in 2018, Democrats won the House popular vote by 8.6 points and gained 41 seats. Today’s margin is in the same range.

The Senate is closer. In its October 6 Power Rankings, Fox News gave each party 47 seats, with Alaska, Iowa, Maine, Michigan, Ohio and Texas as toss-ups. It moved North Carolina, where former Gov. Roy Cooper is running, to Likely Democratic, and rated New Hampshire Lean Democratic and Kansas Lean Republican. On October 14, Sabato’s Crystal Ball moved Kansas to Toss-up, writing that “a full-on Republican rescue operation appears underway” for Sen. Roger Marshall. By its count, Republicans now need four of five toss-ups to hold the Senate; Democrats need two.

Which key races are moving, and which way?

Texas. Democrat James Talarico still leads Attorney General Ken Paxton, but by a smaller margin. A Marist poll taken October 8–11 has Talarico ahead 47% to 45% among likely voters, inside the ±4.9-point margin. His lead among registered voters slipped from six points to four. The poll was completed before news of Paxton’s trip to Dubai (below).

Kansas. Recent polls show Democrat Adam Hamilton, a pastor, narrowly ahead: YouGov (September 24–October 4) 48% to 45%, and InsiderAdvantage (October 9–10) 47.5% to 46.7%. A New York Times/Siena poll found the race roughly tied at 45% each. President Trump has said he will rally for Marshall in Kansas.

Maine. Marist (October 1–4) found Democrat Troy Jackson at 51% and Sen. Susan Collins at 47% among registered voters. Yet 57% of Mainers expect Collins to win, showing how much voters trust her record of surviving close races. In their October 6 debate, the two clashed over Medicaid cuts, the Iran war and ICE. Collins said ICE “needs reform, not to be abolished”; Jackson said it should be disbanded.

Iowa. A Fox News poll (September 24–28) had Democrat Josh Turek ahead of Rep. Ashley Hinson, 49% to 47% among likely voters. Polls since then show a race within the margin of error. In a focus group of former Trump voters run by The Bulwark’s Sarah Longwell, one called Hinson “a party politician”; another said she gives “MAGA vibes.”

Michigan. Six polls taken from late September through October 10 show Democrat Abdul El-Sayed ahead of former Rep. Mike Rogers by 1 to 7 points. Several of those leads are within the margin of error.

Mississippi. Even here, a Wedgewood Polls survey (October 12–14) had Sen. Cindy Hyde-Smith ahead of Democrat Scott Colom by only 52% to 48%. That is a single poll from a little-known firm, so treat it with caution.

Why do polls move in the final weeks?

Partisans “come home.” Voters unhappy with their party’s candidate often tell pollsters they are undecided or leaning the other way, then return to their party as Election Day approaches. In Iowa, the Fox poll found 96% of Democrats backing Turek but only 87% of Republicans backing Hinson. Those missing Republicans are the ones a late campaign tries to win back.

Bandwagons and underdogs. People like to back a winner. A study of French elections, where voters in overseas territories sometimes cast ballots after early results were known, found that this information increased bandwagon voting. The opposite can happen too: a candidate seen as the underdog can draw sympathy, and a side that feels comfortably ahead can grow complacent.

Negative partisanship. Political scientists Alan Abramowitz and Steven Webster have shown that many Americans vote less out of love for their own party than out of dislike of the other one. That makes the president a powerful motivator. In Marist’s Maine poll, 44% said they vote mainly against Mr. Trump, and only 16% said they vote mainly for him.

The margin of error is bigger than it looks. The margin a pollster reports applies to each candidate’s number. According to Pew Research Center, the margin on the gap between two candidates “is generally about twice” as large. A two-point lead with a ±4-point margin is, statistically, a tie.

Why does economic pain make voters want to “throw the bums out”?

When people feel squeezed, they look for someone to hold responsible, and the party in power is the easiest target. The latest data give them plenty to feel. On October 15, the Labor Department reported that wholesale prices rose 6.3% through September, the biggest jump since 2022, driven by fuel. A Harris Poll for The Guardian (September 24–October 3) found that nearly 61% of Americans believe the country is already in a recession, though not by the usual definition. An AP-NORC poll found registered voters now prefer Democrats on the cost of living, 38% to 27%, after an even split in February.

Mr. Trump governs as an authoritarian, or at least leans that way. In this campaign, he called El-Sayed, a Muslim American, a “Terrorist Sympathizer” who “goes back to the days of the Jihad.” Many supporters see something else: a strong, fearless, patriotic fighter who says out loud what they feel. He projects strength, and for them the belief is the reality. That is why his base holds firm even as independents drift away.

How does a scandal like the Paxton video register?

On October 12, The Wall Street Journal published a video of Paxton celebrating New Year’s Eve 2024 in Dubai with two men, Anosh Ahmed and Sameer Suhail, who were indicted in federal court on charges of embezzling $15 million from a Chicago hospital. Both have since returned to the U.S. Paxton’s campaign did not address the trip directly, saying he has been “politically persecuted for years.”

Loyal supporters tend to filter a story like this through their existing view: if the press is the enemy, the video is just another attack. Undecided voters lack that filter. For them, an image like this one is vivid and simple, and it confirms or creates a doubt about character. In a race this close, the people who matter most are the people least protected against that kind of story. Whether it moves the numbers will be known only from polls taken after October 12.

What should voters make of the polls?

Watching polls has benefits: they show which races are competitive, where money and attention will flow, and how the national mood is changing. The drawback is that a poll lead can feel like a result. It can make one side complacent and the other side despairing, and both feelings can change who bothers to vote.

The honest reading, 19 days out, is that Democrats have a clear national edge and the Senate is genuinely up for grabs. Every race listed above could go either way. As our guide to political psychology explains, people decide with feelings first and reasons second. In the final weeks, those feelings harden into a vote.

Related commentary

Sources

Part of the guide:
Dr. Bart Rossi, PhD

About the author

Dr. Bart Rossi, PhD, is a licensed psychologist with more than 40 years of experience, an Emmy Award winner and a national TV commentator on the psychology of politics. Full biography →

More from Dr. Bart Rossi, PhD

All commentary →

The psychology behind the headlines.

Get commentary from Dr. Bart Rossi, PhD, in your inbox: why political figures do what they do, and what it means for the rest of us.

No spam. Unsubscribe anytime.