With a quarter of the votes counted, Marco Rubio had secured nearly 75 per cent of the vote.
US Republican presidential candidate Marco Rubio was projected to win Puerto Rico, CNN and NBC reported on Sunday, giving the Florida senator his second win in the state-by-state nominating contest for the November election.
With a quarter of the votes counted, Rubio had secured nearly 75 per cent of the vote.
© Thomson Reuters 2016