The Washington, D.C. primary is being held on Tuesday as voters in the nation's capital head to the polls.
In the contest, 19 delegates are up for grabs. Primary contests in Wisconsin and Maryland are taking place the same day.
HuffPost's Mark Blumenthal reports:
New polls released over the weekend show Mitt Romney poised to win the two states, Wisconsin and Maryland, that will hold Republican presidential primaries on Tuesday. Add to those likely wins a probable Romney victory in the District of Columbia the same day, and the frontrunner stands a chance not only of sweeping the three contests but also of winning most of the 95 delegates up for grabs.
Click here for a rundown on who's ahead in the race for the Republican presidential nomination.
Below, a live blog of the latest developments to unfold on primary day.