It’s not just that Republicans drew themselves a favorable map. It’s that they drew a durable favorable map.
Thanks to those very effective Republican redistricting maps, Texas Democrats would have to improve their statewide election results by more than 10 percentage points to gain more than one seat in the 36-member U.S. House delegation, according to a report from the non-profit Brennan Center for Justice.
The political maps in Texas and elsewhere across the country could ultimately protect the Republican majority in the U.S. House even if it turns out to be an otherwise mediocre midterm election for the president’s political party.
Overall, Republicans have a 24-seat advantage in the U.S. House. Democrats have an advantage over Republicans in recent polling, the report says, but gerrymandering makes a party switch much less likely. To win two dozen seats, by Brennan’s figuring, Democrats would have to win the national popular vote by 11 percentage points.
“Even a strong blue wave would crash against a wall of gerrymandered maps,” the report says.
The 2016 elections put 25 Republicans and 11 Democrats in the state’s delegation to the U.S. House. Democrats got 42 percent of the state’s votes that year, according to the report’s authors. A modest improvement in the share — as little as 2 percent — could move a seat from the Republicans to the Democrats. It’s not hard to figure out that the 23rd Congressional District that runs along the border is what’s in play here; it’s the only true swing seat in the state, regularly primed to go to whichever party is having the better election year.
But here’s the house-on-stilts aspect to the maps. According to the Brennan Center’s projections, the Democrats could improve their statewide vote share by as much as 7 points — to 49 percent — and that’s still the only congressional seat they would pick up.
Listen carefully right now and you’ll hear protests from other parts of the state, like CD-32 in Dallas and CD-7 in Houston, where optimistic Democratic challengers are vying to unseat Pete Sessions and John Culberson. They might be right. The study isn’t trying to predict races. It’s trying to show how strongly the Republicans cemented their advantage in Texas, given normal conditions. Actual mileage may vary.
It would take a tsunami — a double-digit leap in Democrat’s percentage share — to gain more than a single seat in Texas. Something like that would still leave the Republicans in the majority, but it would be a 19-17 advantage instead of the 25-11 edge they have now. “For Democrats to win more than one-third of seats under the 2011 Texas map, they would need to win close to half the vote,” the report says.
The report is here and the executive summary is here. It looks at multiple states and is worth reading for its methodology and thoroughness. One way to look at this is that if Democrats can get to fifty percent of the statewide vote, then there are an awful lot of Congressional seats that would be poised to topple in their direction. Republicans drew this map on the quite reasonable so far assumption that Dems will not get to a majority of the statewide vote, but if that assumption were to fail they’d go from a trickle to a flood in a big hurry.
If it’s too daunting to think about like that, the way I look at it is that the magic number for Democrats is 2.7 million, which is to say 75% of their 2016 vote total. I’ve noodled around with the numbers before now, and that’s where things get interesting, in multiple districts. Not just Congressional districts, either – State Senate seats start to flip as well. On the one hand, that’s a huge increase over the usual off-year total. On the other hand, it’s asking people who have at least some history of voting to vote this year. Democrats gained 800,000 votes from 2004 to 2008, so a big jump can happen. What this report is saying, and I agree with it, is that this is what needs to happen. Are we up to it?