Poll: Clinton
Holding the Line in Pennsylvania

One week before Pennsylvania's presidential primary, Clinton is holding the line as front-runner. After three weeks of shifts in Obama's favor, the percentages in this survey remained unchanged from one taken a week earlier -- with Clinton leading Obama 50% to 44%. Support for Obama among the state's black voters surged to 86%, compared with 75% a week ago, while Clinton maintained her advantage among whites, 57% to Obama's 37%. Twenty-six percent of Clinton supporters said they would vote for presumptive Republican nominee John McCain in November if Obama is the Democratic nominee, while 19% of Obama's backers said they would support McCain if Clinton is the nominee.

The Quinnipiac University poll was conducted by telephone April 9-13. It involved interviews with 2,103 likely Democratic voters in Pennsylvania. The margin of sampling error was plus or minus 2.1 percentage points.

A Rasmussen poll of 741 voters taken on April 14 gave Clinton a nine-point edge over Obama. The poll had a four-point margin of error. (AP, with additional reporting by The Advocate)