How many times did an election feature the result robert l. leggett (d) 50.2% albert dehr (r) 49.8%?
CREATE TABLE "united_states_house_of_representatives_e" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "result" text,
  "candidates" text
);
SELECT COUNT("result") FROM "united_states_house_of_representatives_e" WHERE "candidates"='Robert L. Leggett (D) 50.2% Albert Dehr (R) 49.8%';