CREATE TABLE table_28875 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

How many district has a candidate that was first elected on 1811?
SELECT COUNT("District") FROM table_28875 WHERE "First elected" = '1811'
SELECT COUNT("District") FROM "table_28875" WHERE "First elected" = '1811'