Obama's job approval sinks to record low in Pennsylvania

A warning sign for President Obama: His approval ratings are at their lowest level ever in the key state of Pennsylvania, which he won in 2008.

A new Quinnipiac poll shows 42% of Pennsylvania voters approve of the way Obama is doing his job, down 9 percentage points from February. A majority, or 52%, say Obama doesn't deserve a second term.

"It's still 18 months until Election Day 2012, but these numbers are not going to make the White House happy," said Peter Brown, assistant director of the Quinnipiac University Polling Institute.

One troubling area for Obama is his standing with independent voters, the key to many elections. Nearly 60% of independents, or 57%, disapprove of Obama, up from 50% in February. (Continues here)