Only 31 percent of Pennsylvania voters believe Democratic Sen. Arlen Specter should be re-elected, and 59 percent believe it’s time to give someone else a chance, a state poll released today shows.

Specter’s numbers are “staggering,” said pollster Jim Lee, president of Susquehanna Polling and Research. An incumbent typically is vulnerable if fewer than 40 percent approve of his or her re-election, Lee said. The poll of 700 registered voters, conducted Oct. 7-12, has a margin of error of plus or minus 3.7 percentage points.

“When I see a re-elect in the low 30s, that’s … near fatal,” Lee said.