WASHINGTON (CNN) -- Sens. John McCain and Barack Obama will claim victory in all three contests in the Potomac primaries, CNN projects.
Sen. John McCain will beat Mike Huckabee in all of the Tuesday contests, CNN projects.
1 of 3 Residents cast votes Tuesday in Maryland, Virginia and the District of Columbia.
Obama had a substantial lead over Hillary Clinton in Virginia, and McCain was ahead of Mike Huckabee by about 7 points, according to CNN projections.
In the District of Columbia, Obama was leading Clinton 75-23 percent, and McCain was leading Huckabee 67-17 percent, with about half of the precincts reporting.
Polls in Maryland were supposed to close at 8 p.m. ET, but a judge extended voting for an extra 90 minutes due to icy roads and heavy turnout.
McCain is leading Huckabee 812 to 217 in total delegates, according to CNN estimates. A GOP candidate needs 1,191 delegates to secure the nomination.
Obama's wins give him more delegates than Clinton. According to CNN calculations, Obama has 1,195 delegates to Clinton's 1,178.
http://www.cnn.com/2008/POLITICS/02/12/potomac.primaries/index.html