CREATE TABLE table_60572 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT)

What party is the person who was first elected in 2000 and was re-elected?
SELECT "Party" FROM table_60572 WHERE "Results" = 're-elected' AND "First elected" = '2000'
SELECT "Party" FROM "table_60572" WHERE "First elected" = '2000' AND "Results" = 're-elected'