Mitt Romney won the Washington, D.C., presidential primary Tuesday night in a mostly uncontested race that will net the former Massachusetts governor 19 delegates.

NBC News projected Romney’s win as the polls closed at 8 p.m. ET.

Still, the 19 delegates Romney will earn from the nation’s capital ­— delegates are awarded on a winner-take-all basis — will add additional distance between him and his Republican rivals.

The GOP front-runner spent little time in the District before the election, opting to focus his efforts on the more competitive Wisconsin primary. D.C. has a relatively small proportion of registered Republicans, with Democrats holding a 68-point registration advantage in the entirely urban federal district.