ABC News' Nitya Venkataraman Reports: Ahead of the state's Tuesday contest, the Pennsylvania Department of State announced a record number of voters registered for the primary election.
Though this year's final tally of 8,328,123 voters is a record number of registrations for a primary contest in Pennsylvania, the record for any election remains the 2004 general election when 8,366,663 Pennsylvanians registered to vote.
Since January, 218,923 new voters have registered: nearly 70 percent of them as Democrats; 18 percent as Republicans.
Tuesday's primary in the Keystone State is a closed primary: state voters must be registered members of a political party to vote in that party's primary. Since January, 164,026 registered voters changed their affiliation to Democratic; 14,887 registered for the G.O.P.
The press release listed the highest number of registered voters by age group as between 45 and 54; the lowest between 18 and 24.