“Super Tuesday” is underway – the make or break series of US primaries that will really put to the test the dominance of the presidential frontrunners in the race for the White House.<br /><br /> Virginia kicked off the voting early on Tuesday, the first of more than ten states where people will designate their preferred presidential candidate.<br /><br /> Around a fifth of Republican delegates, and a quarter of Democrats, will have their say in the biggest single day of state-by-state nominating contests for November’s election to succeed Barack Obama. <br /><br /> Donald Trump will be seeking to stay ahead of his Republican rivals Ted Cruz and Marco Rubio.<br /><br /> The tycoon may be looking stronger than ever as he goes into Super Tuesday but his popularity among Republicans continues to be dogged by controversy. <br /><br /> His rally in Virgina was disrupted by protests against his failure to denounce the endorsement of a Ku Klux Klan leader, but once again he turned it to his own advantage vowing to unite the country.<br /><br /> “When
