CREATE TABLE table_18154 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Results" CLOB, "Candidates" CLOB)

What's the first elected year of the district that Ed Towns is an incumbent of?
SELECT "First elected" FROM table_18154 WHERE "Incumbent" = 'Ed Towns'
SELECT "First elected" FROM "table_18154" WHERE "Incumbent" = 'Ed Towns'