Former Rep. Pat Toomey (R) is holding on to his slight edge over Sen. Arlen Specter (D), but about a third of voters are taking their time about making up their minds, according to a Franklin and Marshall College poll released Wednesday.

Toomey led Specter, 33 percent to 29 percent with 32 percent undecided. The margin of error was 2.9 points.

When tested against Specter’s challenger in the Democratic primary, Rep. Joe Sestak, Toomey led 27 percent to 19 percent, with a whopping 49 percent undecided.

Looking only at the Democratic primary, Specter led Sestak, 32 percent to 23 percent.

The poll of 964 registered voters was taken March 15-21.