Kyrsten Sinema’s campaign has said that her lead in the Senate race is “insurmountable.”

Sinema (D) faced Martha McSally (R) in the race for U.S. Senate in Arizona. The state has been counting ballots for the past week, and the race remained too close to call.

Votes counted on Sunday put Sinema 32,000 votes ahead of McSally, and there are 220,000 votes left to count. Sinema is now ahead by 1.5%.

Related: She’s the Dems best shot at taking the Senate. She’d also be the nation’s first bisexual Senator.

In order to take the lead, McSally would have to win the remaining 162,000 Maricopa County votes by 22%, even though she has been losing that county so far.

The Sinema campaign said that this isn’t possible.

BREAKING @kyrstensinema campaign manager declares her lead 'is insurmountable… Kyrsten will be declared the next U.S. Senator from Arizona.' Race has not yet been called by any media org. #AZSEN #12News pic.twitter.com/FqFhmDpPFp — BrahmResnik (@brahmresnik) November 12, 2018

If she’s certified the winner of the race, she’ll be the first out bisexual U.S. Senator, defeating a Republican who opposes LGBTQ equality.

Counting Sinema, there will be 47 U.S. Senators in the Democratic caucus next year and 51 in the Republican caucus. Florida’s Senate race remains too close to call, and Mississippi will hold a runoff election at the end of the month.