Name the incumbent for robert monell (j) 63.6% tilly lynde 36.4%
CREATE TABLE "table1_2668243_17" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" text,
  "result" text,
  "candidates" text
);
SELECT "incumbent" FROM "table1_2668243_17" WHERE "candidates"='Robert Monell (J) 63.6% Tilly Lynde 36.4%';