CREATE TABLE table_204_400 (id DECIMAL, "district" DECIMAL, "senator" TEXT, "party" TEXT, "caucus" TEXT, "first elected" DECIMAL, "counties represented" TEXT)

how many republicans were elected after 2000 ?
SELECT COUNT(*) FROM table_204_400 WHERE "party" = 'republican' AND "first elected" > 2000
SELECT COUNT(*) FROM "table_204_400" WHERE "first elected" > 2000 AND "party" = 'republican'