CREATE TABLE table_18188 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

what's the party with candidates jerry weller (r) 51.77% clem balanoff (d) 48.23%
SELECT "Party" FROM table_18188 WHERE "Candidates" = 'Jerry Weller (R) 51.77% Clem Balanoff (D) 48.23%'
SELECT "Party" FROM "table_18188" WHERE "Candidates" = 'Jerry Weller (R) 51.77% Clem Balanoff (D) 48.23%'