Yevgeny Vindman, a former Army lieutenant colonel, was fired by the Trump administration for joining his twin brother as a whistle-blower in the first impeachment of President Donald J. Trump.

Democratic retired Army Lt. Col. Eugene Vindman defeated Republican Derrick Anderson in the open race for Virginia’s 7th Congressional District in a close race that took nearly a day to determine the winner.

Democrat Eugene Vindman has won Virginia’s most competitive congressional race, defeating his opponent in a blow to the GOP’s hopes of flipping the open House seat.