A Northern Virginia House candidate who trailed his opponent by just 51 votes opted against recount and conceded the race Thursday.

“After a spirited race, the voters of the 87th District ultimately chose our opponent by a slim margin of 51 votes,” Democrat Mike Kondratick said in an e-mail to supporters in the newly created district, which covers parts of Loudoun and Prince William counties. “That result was confirmed in the final canvass yesterday.”

Kondratick, director of grass-roots advocacy for the Juvenile Diabetes Research Foundation, was entitled to a free recount in the race against Republican businessman David Ramadan.

A candidate who loses by a margin of 1 percent or less may request one at his own expense. If the margin is 0.51 percent or less, the local jurisdiction picks up the tab.

Kondratick, who lost by 0.47 percent, passed anyway.

“A recount isn’t in the best interests of the residents of the 87th district,” he said.