Pollster John Zogby reports in our weekly White House report card that President Obama's signature health care reform is dragging Democrats down.

"President Obama got some chilling news from a USA Today/Pew poll this week. Americans who oppose his health care law say they are significantly more likely to vote in November than those who support it. Democrats can lose the Senate if those numbers hold.

“On the other hand, the poll's sample included 42 percent self-identified Republicans and 39 percent self-identified Democrats. This pollster knows that party identification changes over time, but not like an earthquake on the San Andreas Fault. Nonetheless, Democrats are going to need those new health care beneficiaries to come out in droves to vote, and it looks like it could take some convincing."

Grade: C-