Given the poor track record, maybe it's time to let primary voters in a few states weigh in before making confident predictions, or endorsement decisions based on them. If Cruz wins Iowa and Trump wins New Hampshire, there will still be plenty of Republicans, especially relatively moderate ones, who don't like either man, thus leaving space for other candidates. The "establishment lane" will likely be clearer after New Hampshire. Winnowing will take place, too, if Trump wins both states; Cruz could well be among the winnowed.