Slaughter, the Democratic incumbent, received 96,800 votes to Assini’s 95,931 votes. That makes a difference of 869 votes.

Updated: Wednesday, November 12 2014, 06:49 PM EST

Rochester, N.Y. – After eight days of meticulous counting and waiting, Congresswoman Louise Slaughter will retain her seat in the House of Representatives.

According to Rep. Slaughter’s office, her Republican challenger Mark Assini called her office Wednesday afternoon to concede after the Monroe County Board of Elections finished counting nearly all of the ballots.

Slaughter, the Democratic incumbent, received 96,800 votes to Assini’s 95,931 votes. That makes a difference of 869 votes.

There was some question as to whether how many military ballots were outstanding. Military ballots that are post marked by Election Day have until November 17 to arrive at the Board of Elections, according to New York State law. The Board of Elections anticipates there will only be a handful of these.

“I just called Mrs. Slaughter and I congratulated her on a hard fought victory and I wished her all the best in the next two years in representing the district, and I told her I’d keep her in my prayers,” said Assini of his phone call conceding to Slaughter. “We took on a powerhouse in Washington and so we were very happy and very proud. When I go to the grocery store now, whether it’s Wegmans or Tops or wherever I go, I won’t have to put my head down because I did it [campaign] in a positive way.”

The Board of Elections has to certify the results by Thanksgiving Day, November 27.