By Steve Holland
MANCHESTER, N.H. (Reuters) – There was no Donald Trump but his top issue, illegal immigration, was a dominant theme on Monday for 14 Republican presidential candidates who tested their messages at a New Hampshire forum to start a pivotal week on the campaign trail.
Facing their first face-to-face debate on Thursday in Cleveland, the candidates got in some warm-up action at the Voters First Forum. The event lacked the punch of an actual debate but allowed participants to talk up their policy beliefs in answer to questions from a moderator.
Senator Lindsey Graham of South Carolina got in what was arguably the zinger of the night when he declared himself uniquely qualified to take on Democrat Hillary Clinton in a general election matchup in November 2016.…