what's the party with candidates  jerry weller (r) 51.77% clem balanoff (d) 48.23%
CREATE TABLE "illinois" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" text,
  "result" text,
  "candidates" text
);
SELECT "party" FROM "illinois" WHERE "candidates"='Jerry Weller (R) 51.77% Clem Balanoff (D) 48.23%';