CREATE TABLE table_21794 ("Poll Source" CLOB, "Dates administered" CLOB, "Democrat: Jay Nixon" CLOB, "Republican: Kenny Hulshof" CLOB, "Lead Margin" CLOB)

What poll source claimed that Republican: Kenny Hulshof had 43%?
SELECT "Poll Source" FROM table_21794 WHERE "Republican: Kenny Hulshof" = '43%'
SELECT "Poll Source" FROM "table_21794" WHERE "Republican: Kenny Hulshof" = '43%'