Former Colorado Gov. John Hickenlooper is expected to end his long-shot bid to be the Democratic presidential nominee, a source familiar with the campaign told the Associated Press.

Hickenlooper is expected to make the announcement on Thursday, the news agnecy reported, citing an unnamed campaign source.

Hickenlooper, who ran as a moderate during his short time in the contest, was polling at about 1% and struggling to raise money for his campaign.

Several reports this week suggested Hickenlooper was considering ending his presidential campaign and enter the race for Colorado’s Republican-held Senate seat.

It was not clear Wednesday night if he would enter the race to challenge Sen. Cory Gardner for a seat Democrats are hoping to flip in their bid to gain a majority in the chamber.