HARRISBURG, Pa. - State Sen. Mike Stack of Philadelphia is the Democratic nominee for lieutenant governor in Pennsylvania.

Stack's victory in Tuesday's primary means he will be the running mate of millionaire businessman Tom Wolf, who has been chosen by voters to challenge Republican Gov. Tom Corbett in the fall.

Stack defeated former U.S. Rep. Mark Critz of Johnstown, Harrisburg City Councilman Brad Koplinski, state Rep. Brandon Neuman of Washington County and Bradford County Commissioner Mark Smith.

No clear front-runner emerged during the campaign. But Stack raised the most money - more than $1 million.

The lieutenant governor's duties include presiding over the state Senate. Benefits include a three-story house with a swimming pool, a state vehicle and a salary of nearly $158,000.