CREATE TABLE table_6926 ("Office" TEXT, "Democratic ticket" TEXT, "Republican ticket" TEXT, "Conservative ticket" TEXT, "Liberal ticket" TEXT, "Free Libertarian ticket" TEXT, "Socialist Labor ticket" TEXT)

The person who is on the Democratic ticket for the position of Office of U.S. Senator was who?
SELECT "Democratic ticket" FROM table_6926 WHERE "Office" = 'u.s. senator'
SELECT "Democratic ticket" FROM "table_6926" WHERE "Office" = 'u.s. senator'