The move comes in spite of Murdoch's public praise during the 2008 White House race for Barack Obama, whom he described as a phenomenon of "rock star" proportions.
Murdoch's News Corporation said it supported the Republicans because the party had a pro-business agenda. Murdoch's Fox News channel, New York Post and Wall Street Journal support the Republicans editorially and he has now added a significant amount of cash to the cause.
The $1m was donated to the Republican Governors Association (RGA) in June, according to information given to the Internal Revenue Service.
The Democrats hold a slim majority of the 50 governorships but politicians in both parties predict significant victories for the Republicans in November. The Guardian
