What is the share of votes in the 2008 (1) election?
CREATE TABLE "table_presidential_elections" (
  "election" text,
  "candidate" text,
  "number_of_votes" text,
  "share_of_votes" text,
  "outcome_of_election" text
);
SELECT "share_of_votes" FROM "table_presidential_elections" WHERE "election"='2008 (1)';