CNN chief data analyst Harry Enten said Wednesday that Republicans have beaten their September polling in Ohio, Iowa and Michigan by wide margins in recent election cycles. If that pattern repeats in November, the GOP could keep control of the Senate despite current Democratic leads in all three states.
With just over a month before the midterms, Democrats have spent weeks enjoying a Senate map that looked impossible a year ago. Democrats need to net just four seats to win the majority. Republicans started the second half of President Donald Trump’s term with what looked like a firm hold on the upper chamber. The Democrats’ original plan was to defend Michigan, Georgia, and New Hampshire, then take Republican seats in Alaska, Maine, North Carolina, and Ohio. Then the map got bigger for the Democrats. Trump’s falling approval numbers and voters’ frustration with the economy gave Democrats openings in states the party had long given up on. Senate Democratic Leader Chuck Schumer took a victory lap almost immediately.
“We now have multiple paths for the majority,” Schumer said. “We found new states – Iowa, Texas – which people a year ago weren’t even paying attention to.”
However, Michigan and Maine, two races Democrats once treated as near-certain wins, have become real contests. That forces the party to win more of its new territory just to stay even. Every “reach” state Schumer adds to the list has to make up for a seat that was supposed to be in the bag.
If Democrats win a majority in the Senate, they’ll be able to block presidential nominees, including judges. A Democratic majority would turn every confirmation vote into a two-year war of attrition. However, some of the races Democrats are banking on going their way have a history of being wrong.
“But here’s the question, what if the polls are wrong?” CNN anchor John Berman asked the network’s chief data analyst Harry Enten.
“We’ve had really good Democratic polls coming out from Ohio, Michigan, Iowa,” Enten told CNN. “And, you know, fool me once, shame on you. Fool me four times, I just have to ask the question, could it happen again?”
His data suggests it might. “In Iowa, where the Democrats have been getting really good polls, Republicans outperformed their September polls by nine points back in 2024. How about Ohio? Six points. How about Michigan? Five points.”
He continued, “And I will note that the leads that the Democrats have in all of these races right now are under how much the GOP outperformed back in 2024.”
Enten went back to 2018, Trump’s first midterm, when Trump wasn’t on the ballot, and the trend was the same.
“You can go back to Donald Trump’s first midterm election. And it’s the same exact story. Look at this, the GOP outperformed September polls in the major 2018 statewide races by six points in Iowa, six points in Ohio and eight points in Michigan.”
The miss wasn’t just a Trump-on-the-ballot effect. It showed up in every cycle Enten checked except 2022. “The bottom line is this,” Enten said. “Over the last few cycles, whether it be 2018, 2016, 2020, 2024, Republicans have outperformed their September polls by at least five points in all these three states where Democrats right now are ahead, but not by a wide enough margin whereby if Republicans outperform their September polls again, it could become very, very interesting.”
So, if the trend continues, the Senate map looks really good for Republicans.
“Let’s just say that the GOP outperforms their Midwest polls, like they did in 2018 and 2024,” Enten said. “Well, what do you get? You get a red Michigan. You get a red Ohio. You get a red Iowa. And all of a sudden, even if Democrats carry states like Texas, Georgia, and North Carolina and Alaska, well, guess what you get? You get a 50/50 Senate with J.D. Vance casting the tie-breaking vote.“
The party could pull off a historic upset in Texas, hold Georgia, and flip North Carolina and Alaska, and still end up in the minority because three Midwestern states have behaved the same way in four of the last five cycles.
The prediction markets are less sure than the polls, according to Enten. “Well, the Kalshi prediction market says that Abdul El-Sayed is still a favorite in Michigan, but not an overwhelming one, 73 percent. Sherrod Brown in Ohio, 61 percent. That’s basically a toss-up territory. And Josh Turek in Iowa, where he got a really good poll earlier this week, a 42 percent chance.”
“In these midwestern Senate races, yes, Democrats have gotten good polls,” Enten said. “But I would just say, hold on just a brief second here because history says, you know what, it might not end for them as well as the polls currently suggest it will.”
Tyler Durden
Fri, 10/02/2026 – 12:20
