Court-ordered redistricting seismically impacted the congressional map in Alabama, precipitating high-stakes primaries in the new 1st and 2nd Districts.

Under the new lines, the Democratic-leaning 2nd District runs from Mobile across much of Alabama's Black Belt. Overall, 11 Democratic hopefuls are on the ballot, but State Rep. Napoleon Bracy, state House Minority Leader Anthony Daniels and former Justice Department official Shomari Figures may be best-positioned to advance to a likely April 16 runoff. Through mid-February, Figures had raised about $299,000, second only to Daniels's $323,000. But Protect Progress, a pro-cryptocurrency super PAC backing Figures, has shelled out $1.7 million to support him, according to data from OpenSecrets. By comparison, Bracy had only raised around $106,000. Still, Bracy may have geography working for him: His home base of Mobile County constitutes 36 percent of the district's population, more than any other county.

The new map also placed two second-term GOP incumbents into a head-to-head primary for the new, dark red 1st District: Rep. Jerry Carl, who currently represents about 59 percent of the new seat's population, and Rep. Barry Moore, who represents the other 41 percent. In such a deeply Republican seat, both contenders have tried to position themselves as the truest pro-Trump conservative. Carl has had the upper hand monetarily. Across his campaign and victory committees, Carl has brought in more than $2 million, compared with Moore's $688,000. And Carl is also getting somewhat more outside support, with groups spending $1.5 million to oppose Moore and just $1.1 million to support Moore or oppose Carl. A late February survey from Auburn University at Montgomery found Carl ahead 43 percent to 35 percent, perhaps in line with Carl's slight geographic and monetary advantages.

—Geoffrey Skelley, 538

Yeah, Nathaniel, polling suggests that those endorsements could make a real difference. According to a February poll from the University of Houston Hobby School of Public Affairs, 70 percent of Republican primary voters said that Trump's endorsement would make them more likely to support a state-legislative candidate, and 64 percent said the same of Abbott's endorsement. In addition, 60 percent said that they would be less likely to support a candidate who voted against Abbott's school voucher legislation. And in a YouGov/University of Texas poll from February, a plurality of Republicans (37 percent) said that the Texas House was not justified in impeaching Paxton, compared with 28 percent who said it was justified and 35 percent who weren't sure.

—Mary Radcliffe, 538

Sitting governors and attorneys general don't usually openly try to defeat incumbents of their own party, but Texas Gov. Greg Abbott and Attorney General Ken Paxton are just built different, I guess. Today's Texas primaries are the culmination of two separate intraparty power struggles from the past year, in which Abbott and Paxton are actively trying to defeat Republicans who have defied them in the state legislature.

In May 2023, the Texas state House impeached Paxton on charges of bribery and abuse of office. He was later acquitted by the state Senate, but he has embarked on a revenge tour against those who supported his impeachment by endorsing primary challengers to 35 incumbent Republicans.

Meanwhile, Abbott suffered a massive political defeat last year when a group of mostly rural Republican legislators blocked his top priority, a school voucher program. In what the Houston Chronicle has called a "legacy-defining" campaign, Abbott has spent more than $4 million trying to oust 10 anti-voucher Republicans running for reelection.

Even Trump has gotten in on the act: He has endorsed at least eight primary challengers to sitting representatives, all of whom either voted against vouchers or voted to impeach Paxton (who is a close Trump ally).

If Paxton, Abbott and Trump are successful, the Republican caucus in the Texas state House will look very different — and further right — next year. Throughout the night, I'll be watching for how many incumbents they successfully topple.

—Nathaniel Rakich, 538

In Los Angeles, voters will decide which candidates will face off in November for seven of its 15 city council seats. Arguably one of the most powerful city councils in the country, it's been riddled with scandal the past few years.

In 2022, leaked audio revealed then-City Council President Nury Martinez making racist comments in a meeting that included two other council members, which ultimately led to her resignation. One of the other members who was part of that conversation, Kevin de León, remains on the council after surviving months of protests, calls for his resignation (including from President Biden) and a recall attempt. Today he's running for a second four-year term against seven challengers, including two former political allies, state Assemblymembers Miguel Santiago and Wendy Carrillo. Santiago specifically has scooped up the endorsement of the key labor unions that once backed de León, as well as the Los Angeles County Democratic Party.

Overall, policing, affordable housing and homelessness are big issues in the city, the second largest in the nation, and how the council decides to handle those issues in the future could help set the tone for the rest of the country. Today's elections could help decide, in part, how progressive the council will be: In other races, business interests have been targeting progressive Councilmember Nithya Raman, and spending to bolster the council's only non-Democrat, independent John Lee, who faces an ethics probe and a more progressive challenger.

—Monica Potts, 538

In several of California's open congressional districts, tonight could be the end of any suspense about who the next representative will be. Or, it could be the start of an eight-month intraparty slog.

That's because California's unique all-party primary system — where the top two primary vote-getters advance to the general election — allows for either a traditional contest between a Democrat and a Republican or a fight between members of the same party in the general election, and it's not always obvious which one you're going to get. That's the case in at least four open-seat races today — three Democratic and one Republican.

In California's 16th District, there are nine Democrats but just two Republicans vying to replace Democratic Rep. Anna Eshoo. While limited polling of the district suggests that former San Jose Mayor Sam Liccardo or Santa Clara Supervisor Joe Simitian, both Democrats, are the front-runners, if one of the two Republicans consolidates most of the GOP vote and the Democratic vote scatters among the many candidates, a Republican could finish in the top two. In the 2022 primary, the Republican candidates didn't meet that threshold, splitting a combined 22 percent of the vote; the four GOP candidates in the state's Senate race won a combined 24 percent in the district. A Republican advancing would ensure that whichever Democrat also finished ahead would win the general election in November, given the district's partisan bent. But if two Democrats finish in the top two, it'll be a real race.

Same goes in the 30th District, where Adam Schiff is leaving to run for Senate. Twelve Democrats and just two Republicans will appear on the ballot there. In the 2022 primary, four GOP House candidates totaled 21 percent, and Senate GOP candidates combined for a smaller 22 percent. Democratic state legislators Anthony Portantino and Laura Friedman, and Democratic former city attorney Mike Feuer are the front-runners for this seat; if two of those three make it to the general election, it will be an expensive and sharp-elbowed race to November, but if one of the Republicans squeezes in, it's basically over.

In the 31st District, where Democrat Grace Napolitano is retiring, six Democrats and two Republicans are running. In 2022, the one Republican running for the seat, Daniel Martinez, advanced to the general by winning 37 percent of the vote in the primary. Former Rep. Gil Cisneros, state Sens. Susan Rubio and Bob Archuleta, former Monrovia Mayor Mary Ann Lutz and attorney Greg Hafif are all running well-funded Democratic campaigns, creating the possibility that Martinez, who is running again, could finish in the top two instead of two Democrats, effectively ending this race tonight.

And in Kevin McCarthy's old seat, the 20th District, it's a similar story with the parties reversed. There, the two Democrats will probably combine for around 30 percent of the primary vote (in 2022, the House candidates combined for 30 percent and the Senate candidates for 32 percent), while six Republicans fight over the remaining 70 percent (a seventh dropped out but remains on the ballot).

—Jacob Rubashkin, Inside Elections