Trumps early popularity sends a strong message to the other R candidates IMO. That is that a lot of voters are pissed off and want a leader who isn't going to be pushed around by other countries, will take a no bull common sense approach to the big problems and will be tough on anyone that gets in the way of progress or politicizes it. The closest person in the race to Trump in terms of attitude is Chris Christie, Cruz and maybe Carly although she is much more polished which probably causes her to be perceived more softly to some. Walker is quietly tough which might not play as well in a crowded field. I love what Trump is doing especially if it causes other candidates to add some attitude to their campaigns. Trump, if he could articulate his message more like Carly would be running away with the thing right now IMO.