CREATE TABLE table_22114 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

What year was Tim Holden first elected?
SELECT MIN("First elected") FROM table_22114 WHERE "Incumbent" = 'Tim Holden'
SELECT MIN("First elected") FROM "table_22114" WHERE "Incumbent" = 'Tim Holden'