Republicans could have an election edge even if California redraws House maps
Republicans appear well-positioned to retain control of the House next year even if California voters redraw congressional maps that give Democrats a big advantage, new independent analyses find.
Californians will vote in November on Proposition 50, which would change the shape of current districts to make it difficult for five Republican incumbents to retain their seats.
Even if Democrats win all those seats, map changes in at least three other states could help topple Democrats and put Republicans in their place, say analysts from Inside Elections and the Cook Political Report, nonpartisan groups that study congressional elections.
“This summer made clear that the battle for the House of Representatives is the number one political priority for President Donald Trump and GOP leaders,” wrote Jacob Rubashkin and Nathan Gonzales of Inside Elections.
Democrats need a net gain of three seats next year to win control of the House. The California initiative was a response to Texas’ decision to redraw its maps to help create five Republican-dominated districts.
Texas’ change was signed into law last month. Other Republican-led states are changing or in the process of altering their maps.
Big Republican gains?
As a result, said Inside Elections, “With new maps in Texas, Ohio, Missouri, and potentially Indiana, and Florida, Republicans could gain as many as 13 or 14 seats thanks to redistricting alone. Add to the GOP seats already in play, and Democrats would have to flip 17 seats
“Gov. Gavin Newsom’s proposed map in California could reduce that magic number down to 12, but voters have to approve that plan this November. And Democrats simply don’t control enough other states to go district-for-district with Republicans,” Inside Elections said.
The Cook Political Report saw potential for as much as a 13-seat pickup for Republicans in Texas, Ohio, Missouri, Indiana and Florida through redistricting.
That would mean “giving them a much better shot at holding on to their three-seat House majority,” said Erin Covey, House editor.
The best scenario for Democrats would be a six-seat Republican pickup in Texas, Ohio and Missouri, the five seat Democratic gain in California and two more in Maryland and Utah.
Still, that would mean a Democratic net gain of one seat. As a result, “The likeliest scenario is probably somewhere in the middle, with a net seat gain in the mid-to-high single digits for the GOP,” Covey said.
Democratic hopes
Kyle Kondik, managing editor of Sabato’s Crystal Ball, another nonpartisan group that studies House races, was more circumspect.
“We don’t know where this is going to end up. I see the Republicans coming out of this ahead in the sense that the overall House map should have more of a Republican lean in 2026 than it did in 2024,” he said.
California will matter. “California is a huge factor in that – if voters approve the new map and it goes into effect, it’ll take a big bite out of the GOP gains elsewhere,” he said.
Here’s the more optimistic Democratic view: Historically, the party that controls the White House loses big in mid-term elections. Trump’s GOP lost 40 seats and control of the House in 2018, the middle of his first term. President Joe Biden’s Democrats lost nine seats and that party’s majority four years later.
This story was originally published September 15, 2025 at 1:38 PM with the headline "Republicans could have an election edge even if California redraws House maps."
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