For the first time, Idaho Republicans are trying presidential preference caucuses on Tuesday. Jonathan Parker, the state party’s executive director, is excited about the chance to hold party-building exercises on such a broad scale. ” For the first time, maybe ever, Idaho is relevant in the nominating process,” he says. But as much as he relishes the attention — Mitt Romney held a rally in Idaho Falls last week — Parker worries that the state GOP could generate the wrong kind of publicity. That is, if the Idaho caucuses turn out to be as screwed up as those in several other states this year.