Pennsylvania Governor Tom Corbett now has his first challenger in his bid for re-election.
John Hanger launched his campaign Wednesday in Philadelphia's Reading Terminal Market.
The 55-year-old Hanger touted his record as a state utility regulator and the Rendell administration's secretary of the Department of Environmental Protection.
He vows to make education the top priority for state funding and to end Pennsylvania's status as the only major natural gas-producing state that does not tax gas production.
He supports gay marriage and legalizing marijuana for medical purposes.
Several other Democrats are also considering running in the 2014 race.