Name the leader battle for 4-3 vote
CREATE TABLE "table1_25920798_2" (
  "episode" real,
  "reward" text,
  "leader_battle" text,
  "immunity" text,
  "individual_immunity" text,
  "eliminated" text,
  "vote" text,
  "finish" text
);
SELECT "leader_battle" FROM "table1_25920798_2" WHERE "vote"='4-3';