Barack Obama holds a sizable lead over Hillary Clinton in Virginia, the biggest prize for Democrats on what is being dubbed the "Potomac Primary" on Tuesday, according to a new poll.
Insider Advantage says that Obama has a 52 percent to 37 percent lead, thanks to overwhelming support from black voters and to an even split with Clinton among white voters. Ten percent of respondents said they were still undecided. The poll was conducted on Wednesday.
A SurveyUSA poll in Virginia gives Obama an even bigger lead, 59 percent to 39 percent.
The same poll, conducted Thursday and today, gave John McCain a 57 percent to 25 percent lead over Mike Huckabee on the Republican side.
In Maryland, which also votes Tuesday, SurveyUSA says that Obama leads Clinton 52 percent to 33 percent and McCain leads Huckabee 56 percent to 17 percent. That survey was also completed Thursday and today.
Virginia offers 83 delegates, while Maryland awards 70 and the District of Columbia 15, as Clinton and Obama wrestle for every delegate.