U.S. Democratic Party presidential hopeful Barack Obama is predicted to do well on Tuesday in three Mid-Atlantic primaries and build upon a series of victories in previous days.
Public opinion polls show Obama in the lead over Senator Hillary Clinton in the contests in Washington D.C., and the neighboring states of Maryland and Virginia. Voter turnout is expected to be high.
Both senators campaigned in Maryland Monday ahead of the contests. But Clinton is already looking past today's primaries to contests March fourth in the states of Texas and Ohio, where polls show the former first lady in the lead.
On the Republican side, frontrunner John McCain hopes to solidify his hold on the party's nomination. Former Arkansas Governor Mike Huckabee trails far behind the veteran Arizona lawmaker in delegates needed to secure the party nomination. But he has ignored calls from McCain supporters to drop out of the race and unite the party.
For the Democrats, Obama won nominating contests in the past days in four states Louisiana, Nebraska, Washington state and Maine. But latest delegate count estimates show Clinton with a slim lead over Obama -- at least one-thousand-147 to Obama's approximately one-thousand-120.
Two-thousand-25 are needed to secure the Democratic Party's presidential nomination, while one-thousand-191 are needed to become the presidential nominee for the Republican Party. McCain has won more than 700 delegates already.