Representative Bruce Poliquin watched the returns from Dysart's Bangor location on Tuesday.
Shortly after midnight, Republican Bruce Poliquin thanked his supporters and urged them to go home for the night.
"It's going to be close. We have about roughly 25, 26 percent of the vote is in. It's very, very close," said Poliquin.
In the early morning hours of Wednesday, Lewiston democrat Jared Golden was in a virtual dead heat with the two-term congressman. Shaking hands with supporters, Poliquin exuded confidence that he would emerge with a victory.
"You know we'll count all the votes and see what it looks like at the end of the night," Poliquin said.
The race to represent Maine's Second Congressional District has been one of the most expensive races in the country, with an estimated $20 million being spent on television, radio, social media, mailings and phone calls.
Both candidates believe it's probably going to be up to ranked choice voting to choose who is going to be Maine's next congressman from Maine's Second Congressional district.
Clerks from across the state will be putting ballots into sealed boxes, sending them to the Secretary of State's office, and it could be several days before a result is known.