the 2008 democratic primary in pennsylvania was held on april 22 by the pennsylvania department of state in which voters chose their preference for the democratic party's candidate for the 2008 u.s. presidential election. voters also chose the pennsylvania democratic party's candidates for various state and local offices. the selected candidates will be placed on the ballot of the 2008 general election on november 4. the democratic primary was part of a general primary that also included the 2008 pennsylvania republican primary.