There are more than 275 mayoral races on the ballot around the country today, ranging from the Jersey Shore’s Point Pleasant Beach (population 4,828) to big cities like Houston and Philadelphia. I’ll be closely tracking the results in those two cities, but will also keep an eye throughout the night on local news for surprising outcomes in lower-profile races.

Former Philadelphia City Council member Cherelle Parker is highly favored to replace Mayor Jim Kenney, who is term-limited, after winning an expensive Democratic primary in May. Another former City Council member, David Oh, won the Republican nomination uncontested. A Republican victory would be a shocker here — we don’t have any public polling of the general election, but about three in four Philadelphia voters are registered Democrats, and the city hasn’t had a Republican mayor since 1952. However, Oh has won over Democratic voters before, so it’s a race worth watching. Parker too is a moderate within her party, and made news when she beat out progressive primary opponents with a tough-on-crime platform including support for controversial stop-and-frisk policing tactics. Both candidates would make history with a win: Oh would be the first Asian American ever to serve as mayor of Philadelphia, and remarkably, Philadelphia has never elected a female mayor, so Parker is likely to be the first.

In Houston, the mayor’s race is more competitive, but tonight is likely just the first half of a two-part series. If no candidate receives 50 percent of the vote, the top two performers progress to a runoff election, which will be held on Dec. 9. And with 18 names on the ballot today, it’s going to be tough for any individual candidate to coalesce half of the vote. This race is technically a nonpartisan election, but the top two candidates are longtime Democratic state Sen. John Whitmire and longtime Democratic U.S. Rep. Sheila Jackson Lee. Whitmire is by far the top spender in the field. The only public poll we’ve seen so far — conducted by the University of Houston Sept. 30-Oct. 6 — also found Whitmire leading the race with 34 percent of likely voters, followed by Lee at 31 percent. Although they’re both Democrats, Whitmire, who has framed his candidacy around working across the political spectrum, received more support from Republicans and independents in the University of Houston poll. Lee received more votes from Democrats, women and Black voters. In a hypothetical head-to-head matchup, Whitmire led 50 percent to 36 percent.

—Leah Askarinam, 538

Polls are closed in the eastern half of Kentucky and very early results are starting to trickle in. Be aware of a possible blue mirage and a possible red shift later: the early votes, which tend to favor Democrats, are counted first.

—Monica Potts, 538

Key election races across US with implications for 2024:

They’re not the sexiest things on the ballot, but one congressional and seven state-legislative special elections are also taking place today. The highest-profile one is the special election between Democrat Gabe Amo and Republican Gerry Leonard Jr. to fill former Rep. David Cicilline’s seat in the U.S. House. There isn’t much suspense about who will win, though: That seat — Rhode Island’s 1st District — is safely Democratic. As a result, Amo, who is Black, will almost certainly become the first person of color to represent Rhode Island in Congress.

However, it’ll still be worth paying attention to the final margin in that race and the other special elections. As we’ve written in the past, when one party consistently outperforms its usual margins in special elections, it has historically boded well for the party in the subsequent general election. And so far in 2023, Democrats have been winning special elections by significantly more than the partisan baselines of those districts would predict. I’ll be watching to see if that pattern continues tonight.

—Nathaniel Rakich, 538

Happy off-year Election Day! Tonight, I’m watching the proposed constitutional amendment on Ohio’s statewide ballot, which would codify abortion rights in the state constitution. It’s not only a temperature check on how voters view abortion rights post-Dobbs, but also a data point in a red state where Democratic Sen. Sherrod Brown is running for reelection in 2024.

A vote approving Issue 1 would, according to the language of the proposed amendment, enshrine the "right to make and carry out one's reproductive decisions, including but not limited to decisions on contraception, fertility treatment, continuing one's own pregnancy, miscarriage care, and abortion." Controversially, though, a GOP-led ballot board had final say on the wording that appeared on today’s ballots, making changes that could dampen support for the measure.

Advocates on each side of the ballot measure have accused the other side of being too extreme and out of step with Ohio voters. Proponents point to the six-week abortion ban without exceptions that Gov. Mike DeWine signed into law (and that’s currently on hold), while opponents say that the law would allow people to have abortions at any point in their pregnancy. In reality, the proposed amendment would specify that “abortion may be prohibited after fetal viability,” though not in cases where a physician determines that the abortion “is necessary to protect the pregnant patient’s life or health.”

Next year, Brown is running for reelection in one of the key races that could decide the next Senate majority. And you can bet that strategists on both sides of the aisle will be assessing the effectiveness of their abortion messaging on this ballot as they prepare to deploy their resources in 2024.

—Leah Askarinam, 538