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With the Pennsylvania primary just a day away, supporters of both Hillary Clinton and Barack Obama hit the streets in Philadelphia -- Pennsylvanias largest city and a battleground area for both campaigns. SOUNDBITE: (English) Antonio Brown, Pennsylvania Voter and Obama Supporter saying: "Im going to vote for Barack Obama because I believe hes the best candidate for the job, although I did vote for Mr. clinton both times, I do feel that Obama has the upper hand." SOUNDBITE: (English) Marie, Pennsylvania Voter and Clinton Supporter saying: "I dont know, I think I like her issues, you know, plus shes a female. We need change, even though Obamas about change, I think its time for a female to take it." Recent polls show Hillary Clinton is running very strong among Catholic voters-- who make up a third of the Democratic electorate and Jewish voters -- who comprise 17 percent of likely Democratic voters. By contrast, Obama is getting very strong support from black voters. A win by Obama in Pennsylvania would likely end the race for the Democratic nomination. A win by Clinton in the Keystone state-- would extend the fight to Indiana and North Carolina which will hold their own primaries on May 6. Jon Decker, Reuters.