Midterm primaries 2026: Results and reaction as six states including California and Iowa cast ballots

Millions of Americans are heading to the polls today as six states hold pivotal midterm primary elections. These contests will determine the candidates who will compete in November for control of the US House and Senate, as well as numerous gubernatorial races.

In California, the nation's most populous state, voters are choosing among candidates vying to succeed outgoing Democratic Governor Gavin Newsom. The race for Los Angeles mayor and several high-stakes US House contests in newly redrawn districts are also on the ballot. These House races are expected to play a significant role in the national battle for power in Washington.

Iowa presents a key opportunity for Democrats seeking a comeback in a state that has trended Republican. With President Biden's approval ratings facing challenges and high gas prices, Democrats are hopeful about winning back control of both the US House and Senate. Their efforts in the state are spearheaded by figures like Democratic gubernatorial candidate Rob Sand.

Other closely watched primaries include New Jersey's battleground district, where voters will select a Democrat to challenge Republican Tom Kean Jr. In New Mexico, the gubernatorial race is a major focus, with former Interior Secretary Deb Haaland running for the Democratic nomination. Montana features a five-way Democratic contest for a retiring Republican senator's seat, while South Dakota is holding primaries for governor, Senate, House seats, and local legislative races.