What happens when a Democratic wave runs up against a strong Republican gerrymander? In the case of the Utah legislature, probably not much.
With about 50 days to go until the 2026 midterm elections, the environment looks favorable for Democrats. They’ve flipped roughly 30 state legislative seats since Donald Trump returned to office, and special elections in 2025 and 2026 have broken their way by an average of 17 points over the 2024 results. Democrats currently lead Republicans by 7 points on the generic congressional ballot, 50.5% to 43.2%. FiftyPlusOne's election forecast gives them a 96% chance of winning the U.S. House and a 62% chance of winning the Senate.
2026 has the potential to be a wave election for Democrats. In 2018, the last comparable wave year, Democrats picked up 41 seats in the U.S. House. In Utah, they flipped three seats in the state House and one in the state Senate that year — and Democrat Ben McAdams upset Republican incumbent Mia Love in Utah's 4th Congressional District.
We rated all 75 Utah House districts. Here's which races actually matter in 2026.
Which Utah Senate races could be competitive in 2026? Find out with our exclusive ratings.
What would that kind of environment mean for the state Legislature this time?
We modeled three scenarios, applying a Utah-specific Democratic advantage of 2, 4 and 6 points to every House and Senate seat on the 2026 ballot, to see which races would move, which would flip outright, and what it would take to threaten the Republican supermajority that currently holds 61 of the Legislature's 75 House seats.
Most competitive races in Utah don’t become genuinely dangerous for Republicans until the wave grows considerably larger than what national polling shows today.
Because the House and Senate maps lawmakers passed in 2021 are so heavily gerrymandered, a 7-point Democratic wave probably wouldn't change much in the Utah Legislature. But it could put a handful of usually safe GOP-held seats in play this November.
Which races would move first?
A modest Democratic wave barely moves the Utah House. At a Utah-specific Democratic advantage of two points, two Republican-held House seats move into toss-up territory: HD26 (Matt MacPherson) and HD27 (Anthony Loubet). Neither would likely flip. At four points, a third GOP seat, HD43 (Steve Eliason), joins the list. It isn't until six points or more that Republicans would likely lose their first seat: HD26, which drops from 54% Republican to 48%.
Not one of the 15 Senate seats on the 2026 ballot becomes a genuine toss-up at any wave level we tested. The closest is SD19 (Kirk Cullimore), which softens from Likely Republican to Lean Republican in our ratings but never approaches real danger.
If a Democratic wave is building in Utah, HD26 and HD27 are the Republican-held seats that would show it first. Both are already flagged in our race ratings as places where money and political conditions are more favorable Democrats.
Ticket splitting districts worth watching
HD42 (Clint Okerlund) and HD43 (Steve Eliason) are both held by Republicans, but Kamala Harris carried both districts at the presidential level in 2024. She won HD43 by 5.6 points, though the seat is rated Likely Republican because of the incumbent's large fundraising advantage over their Democratic opponent.
What would it take to break the GOP supermajority?
Republicans currently hold 61 of the Utah House's 75 seats. They can afford to lose 11 seats and still keep their two-thirds majority, but a 12th loss would break it.
Eight GOP-held House seats are uncontested by a Democrat this cycle. They can't flip in any wave scenario, no matter how large. That leaves 53 Republican-held seats that are theoretically competitive.
Ranking those seats from most to least vulnerable, the 12th one, the seat that would break the supermajority, currently sits at 67% Republican. Getting there requires a wave of approximately seventeen points.
That’s an enormous number, roughly twice the size of the current national generic-ballot advantage. That kind of shift shows up in wave years like 2018, not a typical midterm, however favorable the environment looks nationally right now.
What if we’re underestimating the wave?
Everything above uses the national generic congressional ballot as a starting point. That number has already moved since we began this analysis, from a 6.3-point Democratic lead to 7.3 points as of the most recent polling averages. Plugging in the updated number, three House seats would probably flip outright: HD26, HD27 and HD10, all narrowly. Republicans would still be eight seats clear of losing the supermajority.
But there's a case that even 7.3 points understates what's actually happening. Democratic performance in special elections has been running well ahead of the polls. Democrats have outperformed their 2024 numbers by an average of 17.1 points in special elections since Trump returned to office, which is more than double the current generic-ballot gap.
At a 17-point swing, the picture changes considerably. Thirteen House seats would become vulnerable, including several that looked entirely safe under the other scenarios: HD09, HD20 and HD44 among them. Two Senate seats, SD5 and SD19, would flip for the first time, both landing just below 50%. Republicans would fall to 48 House seats, two short of the supermajority.
Why Utah’s maps make this so hard for Democrats
There's a structural reason the threshold for breaking the supermajority sits so high, and it has less to do with Utah being a red state than with how the legislative maps themselves were drawn.
Nine House seats are rated Safe Democratic, several by enormous margins exceeding 45 points. The 61 Republican-held seats, by contrast, are spread across a much wider range, with plenty sitting at comfortable but not overwhelming margins in the 55% to 70% territory.
That's close to a textbook definition of an effective gerrymander: a small number of hyper-safe Democratic seats next to a large number of solidly, but not excessively, Republican ones. Democratic voters are concentrated into fewer districts than their statewide numbers would suggest, while Republican support is spread out just enough to hold seat after seat without wasting votes on unnecessary margins.
The Princeton Gerrymandering Project gave the current Utah House map a failing grade for competitiveness. The Senate map fared only slightly better, earning a C.
Utah's legislative map isn't vulnerable to the kind of Democratic environment building ahead of the 2026 midterms. A handful of Republican-held seats are worth watching, and a real wave would meaningfully expand the Democratic caucus in the House.
Breaking the supermajority is a much taller order. Short of a historic wave on the scale of 2018 or larger, Republicans are likely to keep the two-thirds control that lets them override vetoes without a single Democratic vote.