18 points according to SurveyUSA. This one is definitely going against the trends of recent polls, including its own…

In a Democratic Primary in Pennsylvania today, 04/08/08, two weeks to the vote, Hillary Clinton defeats Barack Obama 56% to 38%, according to a SurveyUSA poll conducted exclusively for WCAU-TV Philadelphia, KDKA-TV Pittsburgh, WHP-TV Harrisburg, and WNEP-TV Wilkes-Barre. The results are almost identical to a SurveyUSA poll released one month ago. Then, Clinton led by 19. Today, 18.

In between, however, in a SurveyUSA tracking poll released last week, Obama had closed to within 12 points.

The reasons? Men are coming back to Hillary, as are the older voters.

The two groups that haven’t wavered at all are women and white voters. They’ve stayed with her at a steady 60% pretty much throughout the last 3 of SurveyUSA’s polls.

More as it develops…

Politics Poll: Hill Up Big In Pennsylvania