CREATE TABLE table_13366 ("European election  ( UK ) " FLOAT, "Name" TEXT, "Share of votes" TEXT, "Seats" FLOAT, "Share of seats" TEXT)

Which European election (UK) has a Share of votes of 19%?
SELECT "European election (UK)" FROM table_13366 WHERE "Share of votes" = '19%'
SELECT "European election (UK)" FROM "table_13366" WHERE "Share of votes" = '19%'