HARRISBURG, Pa. (AP) — 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 by Franklin & Marshall College in Lancaster released Thursday 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 7 percent, state Treasurer Rob McCord has 6 percent and former state environmental protection secretary Katie McGinty has 4 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