If that's true, this was awfully sh!tty on Tancredo's part. That endorsement might have given Hunter enough of a bump to put him on the map.
Face facts. If you piled 100% of Tanc's support on top of 100% of Duncan's support, you still couldn't even see the map from the top. If Tanc endorsed anyone but a front runner, he would be all but throwing away any influence his campaign has earned. Hunter will not earn the nomination. Paul will not earn the nomination.
For Fred or McCain to earn the nomination will require beating huge odds involving having two of their three opponents melt down and shifting almost totally to them. Could happen, but likely won't. If Huck busts, it will be Mitt v. Rudy. If Mitt busts, it'll be Huck v. Rudy. If Rudy crashes, it'll be Mitt v. Huck.
Fred and John Mc can pile up 2nd and 3rd place finishes from now 'til June, and all it will net them is a few scattered delegates. Unless they want to be VP, that nets them nothing, even if it goes to convention. If it goes to a brokered convention, it will be #1 v. #2, with #3 as Kingmaker.