04/09/2008 05:12 am ET Updated May 25, 2011

Poll: Clinton Pennsylvania Lead Shrinks To 5 Points

"Senator Hillary Clinton's lead in the Pennsylvania Primary is shrinking," new polling from Rasmussen Reports shows.

The latest...telephone survey in Pennsylvania shows Clinton leading Barack Obama by just five percentage points, 47% to 42%. For Clinton, that five-point edge is down from a ten-point lead a week ago, a thirteen-point lead in mid-March and a fifteen-point advantage in early March.

Support for Clinton slipped from 52% early in March, to 51% in mid-month, 49% a week ago, and 47% today. During that same time frame, support for Obama has increased from 37% to 42%. ...

Tensions clearly remain in the contest. If Obama is nominated, just 56% of Clinton supporters say they are likely to vote for him against John McCain. Forty percent (40%) of Clinton voters in Pennsylvania say they are not likely to vote for Obama.

On the other hand, if Clinton is nominated, just 67% of Obama supporters say they are likely to vote for her against McCain. Twenty-nine percent (29%) are not.

Just 21% of Pennsylvania's Primary Voters say that Clinton should drop out of the race while 18% would like Obama to leave.

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UPDATE: SurveyUSA also has a Pennsylvania poll out today, with Clinton leading by 12:

However, the poll showed Obama gaining ground in the Keystone State, particularly in cities like Pittsburgh and Philadelphia, and among older voters, men and conservative Democrats.

Compared to an identical SurveyUSA poll released three weeks ago, Clinton is down two points and Obama is up five, with Clinton's previous 19-point lead cut to 12, the survey found.

The movement in support came almost entirely from men, according to the survey results. Clinton had led by five points but now trails by seven -- a 12-point swing to Obama.