North Carolina US Senate primary test of Donald Trump's power over Republican voters

When Donald Trump holds his next rally in North Carolina on Saturday, he'll be trying to boost his handpicked favourite for the US Senate, Representative Ted Budd, in a tight and intensifying contest for the Republican nomination. Budd is locked in a dead heat with the state's former governor, Pat McCrory, ahead of the May 17 primary, with former congressman Mark Walker in third place.