CREATE TABLE table_1578 ("Constituency" CLOB, "Electorate" FLOAT, "Votes" FLOAT, "Turnout" CLOB, "Yes" FLOAT, "No" FLOAT, "Spoilt" FLOAT, "Percent Yes" CLOB)

Name the least votes for percent yes for 57.2
SELECT MIN("Votes") FROM table_1578 WHERE "Percent Yes" = '57.2'
SELECT MIN("Votes") FROM "table_1578" WHERE "Percent Yes" = '57.2'