Donald Trump could be a blessing in disguise for the Republicans

OW that Donald Trump has pledged not to run as an independent in the US presidential race, he could yet confound his critics and turn out to be a blessing in disguise for the Republican party.
The conventional wisdom had been that if his volatile candidacy was derailed by the Republican establishment, he would run as an independent and split the party’s vote, handing the presidency to presumptive Democratic nominee Hillary Clinton.