CREATE TABLE table_20350118_1 (mccain_number INT, obama_percentage VARCHAR)

How many votes did McCain get in the county where Obama got 50.7% of the votes?
SELECT MAX(mccain_number) FROM table_20350118_1 WHERE obama_percentage = "50.7%"
SELECT MAX("mccain_number") FROM "table_20350118_1" WHERE "50.7%" = "obama_percentage"