As Republican challenger Ryan Fazio conceded in the 36th Senate District race, the Democratic incumbent, state Sen. Alex Kasser, took a shot at his campaign as the unofficial vote tallies released Thursday morning gave her the win in the race for the 36th Senate District.

“I’m grateful to the voters of the 36th for choosing me as their state senator,” Kasser said in a statement Thursday afternoon. “The results are telling: Our margin in Greenwich was only 0.68 percent, which indicates that voters reject GOP extremism and this once Republican stronghold is changing.”

It took until Thursday morning to finish counting the thousands of absentee ballots in Stamford and determine the victor in the Senate district, which encompasses all of Greenwich and a portion of Stamford and New Canaan.

Kasser won a large share of voters in Stamford, which gave her the win, gaining 8,297 votes in the city to Fazio’s 6,152. He won by close margins in the two other towns in the district, with Kasser gaining 17,396 votes in Greenwich to Fazio’s 17,634 votes and Kasser receiving 2,853 votes in New Canaan to Fazio’s 3,619 votes.

That gave Kasser an unofficial preliminary total of 28,546 compared to Fazio with 27,405 votes, a margin of 1,141 votes.

In her statement, Kasser also praised her campaign manager, Nichola Samponaro, and their field operations.

“We made over 100,000 voter contact attempts, which is remarkable,” Kasser said. “Our campaign team consisted of five field organizers — young women from this district who worked tirelessly to inform voters — as well as high school interns and volunteers of all ages.”

But Kasser also criticized Fazio in the statement, accusing his campaign of “attacking my character, using fake videos and false stories from unreliable third party sources.”

Kasser said she was citing digital ads that were created and paid for by the Connecticut Republican Party. She said she “ran a campaign based entirely on the issues, presenting the facts about my record and showing the truth about my opponent’s record.”

Fazio, for his part, fired back Thursday afternoon.

“I am sad to see Ms. Kasser refusing to win such a close race with magnanimity,” he said in a statement. “I had no intention of using the end of this race as an opportunity to relitigate my opponent’s record or campaign, despite the fact that she opened it on Aug. 2 by comparing my campaign to mass murders in an email blast. I am proud of our campaign and of our supporters and stand by them completely. It’s time to move on and do the people’s work.”

In conceding the race earlier on Thursday morning, Fazio expressed disappointment in the results but also gratitude toward all of his supporters.

“We had the support of close to 27,000 people across this district, and my campaign team worked so hard on my behalf,” he said. “I love this district. I loved the experience of running, and I still believe we need change in Connecticut in order to create a brighter future for everyone. Those underlying facts haven’t changed, and we will continue to advocate for a better way for our state.”

Fazio, who remains a member of the RTM, said that several factors could have hurt his candidacy. There was the value in Kasser’s incumbency, he said, as well as surge of new residents moving to the district from New York during the COVID-19 crisis. That helped create a bump in registered Democrats in Greenwich.

“I think my campaign team worked so hard and did such a great job putting hours and hours every week,” Fazio said. “I just want to thank them first and foremost. I certainly am not the perfect candidate, but I don’t have any regrets.”

Kasser is serving her first term in the state Senate, after defeating Republican L. Scott Frantz in an upset in 2018 by about 600 votes. Her term was saw some controversy over her support of highway tolls, which did not come to fruition, and her vote on the police reform bill that became law this summer.