TRENTON - (AP) - A new poll shows President Obama leadinghis re-election race against all Republican challengers includingNew Jersey Gov. Chris Christie, who insists he isn't going to run.

The Fairleigh Dickinson-PublicMind national poll released Fridayfinds the Jersey guy governor pulling in 34 percent of the vote,compared to 50 percent for the president in a head-to-head matchup.That's a back slide from March, when Christie trailed 40 percent to46 percent.

The poll finds that former Massachusetts Gov. Mitt Romney stacksup best among the potential GOP field. But he, too, trails Obama,39 percent to 45 percent.

The telephone poll of 826 registered voters nationwide wasconducted June 1 through 7 and has a sampling error margin of plusor minus 3.5 percentage points.