LANCASTER, Pa. -

A new poll shows Tom Wolf maintaining a large lead in the Democratic race for Pennsylvania governor, but with an even larger number of undecided voters.

The statewide poll, released Thursday by Franklin & Marshall College in Lancaster, shows 46 percent of Democratic voters still making up their minds, about what the same pollster found in a late February survey.

Wolf, a wealthy York businessman who is running nonstop TV ads, claims 33 percent of the vote. U.S. Rep. Allyson Schwartz has seven percent, state Treasurer Rob McCord has six percent and former state environmental protection secretary Katie McGinty has four percent.

The telephone survey of 524 Democratic voters was conducted between March 25 and 31. The margin of sampling error is plus or minus 4.3 percentage points.