What is the elected year when the party is democratic and the 2010 candidates is jason carter (d) unopposed?
CREATE TABLE "election_results" (
  "district" real,
  "incumbent" text,
  "party" text,
  "elected" text,
  "status" text,
  "2010_candidates" text
);
SELECT "elected" FROM "election_results" WHERE "party"='Democratic' AND "2010_candidates"='Jason Carter (D) unopposed';