What's the lower house majority in the state whose Senior senator is J. Shaheen?
CREATE TABLE "political_party_strength" (
  "state" text,
  "governor" text,
  "senior_u_s_senator" text,
  "junior_u_s_senator" text,
  "u_s_house_delegation" text,
  "upper_house_majority" text,
  "lower_house_majority" text
);
SELECT "lower_house_majority" FROM "political_party_strength" WHERE "senior_u_s_senator"='J. Shaheen';