In 2026 and 2028, there are only four Republican-held seats up for grabs in the Harris-or-purple states: two seats in North Carolina, and one each in Maine and Wisconsin. With so few opportunities, getting from 47 to 48 seats in the Senate today could ultimately decide whether the Democrats get a majority in the years ahead.

Democratic and Republican activists are asking voters to correct technical errors on their ballots in several close races that could determine control of the House.

About half of the yet-to-be-decided House races are in the state, which has only counted about three-quarters of its votes statewide.

Ten of the 17 races that will determine which party controls the U.S. House of Representatives are in California. No state takes longer to tally votes.

What to KnowCompetitive House races remain undecided in Los Angeles, Orange, Riverside and San Bernardino counties. Two of six key races in Southern California had been called as of early Tuesday. Other races remained too close to call.

According to the California Secretary of State's office, in the weekend leading up to Nov. 11, there were still roughly 4.9 million ballots in the state to be counted from the 2024 general election.

California has nearly five million uncounted ballots a week after the election — ballots that could determine whether Republicans have a trifecta in federal government. Only 243,976 ballots have arrived after Election Day last Tuesday,