As is the case with sister boroughs Manhattan and the Bronx, Brooklyn has not voted for a Republican in a national presidential election since Calvin Coolidge in 1924. In the 2008 presidential election, Democrat Barack Obama received 79.4% of the vote in Brooklyn while Republican John McCain received 20.0%. In 2012, Barack Obama increased his Democratic margin of victory in the borough, dominating Brooklyn with 82.0% of the vote to Republican Mitt Romney's 16.9%.