Alaska Senate Race Between Dan Sullivan and Mary Peltola Still Counting Votes

Mary Peltola, a Democrat, widened her lead over Senator Dan S. Sullivan, a Republican, in the latest vote tally in Alaska’s Senate race, but the election remained uncalled on Friday as the count continued.

If neither candidate wins an outright majority, the race will be decided next week by ranked-choice tabulation.

Ms. Peltola had 49.8 percent of the vote and led Mr. Sullivan by nearly four percentage points in incomplete results as of Friday night. She is on track to eventually prevail, according to a New York Times analysis.

The race between Mr. Sullivan, a two-term incumbent, and Ms. Peltola, a former congresswoman, is the only Senate battle still uncalled in a midterm cycle that featured sweeping Democratic victories.

A spokesman for Mr. Sullivan, Nate Adams, said on Friday night after the latest release of results: “We’re still waiting for every ballot to be counted. And we’ll see what happens from there.”

The delay in Alaska is in part because of the time the state allows for mail ballots to be received and counted and in part because of the state’s unique ranked-choice system. Mr. Sullivan and Ms. Peltola faced two other candidates after emerging from a nonpartisan primary in August.