Mitt Romney has secured the Republican nomination after winning the Texas primary.
Although the race to take on Barack Obama for the presidency had been all but over, Romney has now officially clinched the 1,144 delegates required.
He has been the presumptive nominee for several weeks as his rivals one by one withdrew or suspended campaigning. The win in Texas means that after he is endorsed by the Republican convention is August he will be the first Mormon to become a White House challenger.
Although it is is always difficult to unseat an incumbent president, November’s election is likely to be a cliff hanger with many voters undecided over Obama’s handling of the economy.