Table: election_results_2010_2
Columns: district
incumbent
party
first_elected
result
candidates

Question: When mark critz (d) 50.8% tim burns (r) 49.2% are the candidates what is the party?
SQL: SELECT "party" FROM election_results_2010_2 WHERE "candidates" = 'Mark Critz (D) 50.8% Tim Burns (R) 49.2%'

Question: When chris carney is the incumbent what are the results?
SQL: SELECT "result" FROM election_results_2010_2 WHERE "incumbent" = 'Chris Carney'

Question: When 1994 is the first elected what is the district?
SQL: SELECT "district" FROM election_results_2010_2 WHERE "first_elected" = 1994

Question: When pennsylvania 3 is the district who is the incumbent?
SQL: SELECT "incumbent" FROM election_results_2010_2 WHERE "district" = 'Pennsylvania 3'

Question: When 1984 is the first elected who are the candidates?
SQL: SELECT "candidates" FROM election_results_2010_2 WHERE "first_elected" = 1984