Axios · Republicans · White House · Democrats · Axios
The math behind a Democratic wave, or a GOP upset
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Redistricting has helped House Republicans build a seawall that can withstand a roughly 5-point Democratic wave.
Key facts
- If Republicans outperform Trump's 2024 numbers by 5 points across congressional districts, the new maps would give them a massive 253-182 majority
- The current generic ballot has Democrats up roughly 6 points, which would produce a 221-214 Democratic majority in the Axios analysis
- Democrats have been running roughly 10 points ahead of their 2024 presidential performance in special elections this year
- By comparison: In 2018, the national House vote swung 6½ points toward Democrats from the 2016 presidential baseline
Summary
Early readings are pointing to something twice that size, enough to wash away the GOP House majority. Democrats have been running roughly 10 points ahead of their 2024 presidential performance in special elections this year. A swing of that magnitude would produce a comfortable 230-205 Democratic majority, according to an Axios analysis of how the battle for the House would play out under different electoral scenarios. Gerrymandering since the presidential election has given Republicans more breathing room, with GOP-drawn maps creating a net advantage of roughly nine seats.