For Republicans fearful of Donald Trump becoming their party’s presidential nominee, a new Suffolk University/Boston Globe poll of likely New Hampshire Republican primary voters offers a three-word solution: Willard Mitt Romney. If the former Massachusetts governor were added to the mix of the 14 other Republican candidates running in the Feb. 9 first-in-the-nation presidential primary, New Hampshire voters would, if the election were held now, give him a 2-to-1 win over Trump, the leader of the field. Romney, who said as recently as last week that he is not interested in running, did not file for the New Hampshire primary...