McCain and Rubio win Republican primaries

Key US senators John McCain and Marco Rubio won their Republican primaries, setting up high-profile re-election efforts in November as their party fights to retain control of Congress. Freshman lawmaker Mr Rubio of Florida easily defeated business executive Carlos Beruff, securing around 72 percent of the vote and setting up a clash with House Democrat Patrick Murphy. The closely watched Florida match-up is considered to be among those that could tip the Republican-controlled Senate into Democratic hands in November.