Table:
text: United States House of Representatives elections, 2000
Pennsylvania
Pennsylvania
District Incumbent Party First_elected Results Candidates
Pennsylvania 1 Bob Brady Democratic 1998 Re-elected Bob Brady (D) 88% Steven Kush (R) 12%
Pennsylvania 2 Chaka Fattah Democratic 1994 Re-elected Chaka Fattah (D) 99%
Pennsylvania 3 Robert Borski Democratic 1982 Re-elected Robert Borski (D) 69% Charles Dougherty (R) 31%
Pennsylvania 4 Ron Klink Democratic 1992 Retired to run for U.S. Senate Republican gain Melissa Hart (R) 59% Terry Van Horne (D) 41%
Pennsylvania 6 Tim Holden Democratic 1992 Re-elected Tim Holden (D) 67% Thomas Kopel (R) 33%
Pennsylvania 7 Curt Weldon Republican 1986 Re-elected Curt Weldon (R) 65% Peter Lennon (D) 35%

Question: How many parties does incumbent Bob Brady represent in the 2000 United States House of Representatives election in Pennsylvania?