let's bring in cnn's shannon travis. he's in milwaukee. so, shannon, there are those who say, if romney wins, then it's all over for santorum. so tuesday, is it make or break for those gop candidates? >> reporter: yeah, fred, there's a growing chorus of people who are saying that if mitt romney wins here on tuesday, that it's over for santorum. obviously, santorum, the candidate himself says, no, it's not. that he's going to go on. that voters deserve a choice. but if you look at what's happened within just the past few days, we obviously know that president george h.w. bush, florida senator marco rubio, house budget chairman paul ryan, today, senator ron johnson from this state, all endorse romney, even the paper, the "milwaukee journal sentinel" here in wisconsin endorsed romney also. and it started out its endorsement saying, you know, if romney has a convincing win here, it's pretty much all over, although it did also say they wonder which romney they will see in the fall. so there is that chorus, that growing notion that if romney does

shannon travis, he's in north carolina. that's our reporter where gingrich had a campaign event. us later to talk about this decision that a lot of people didn't think would come. as you know, gingrich said he would go all the way to the convention. hees changed his mind due to his showing in north carolina where his primaries were held. he will drop from the presidential race on tuesday. again, more information later on news room. >>> new jersey's governor is defending the decision to suspend two state troopers over this video. here it is. it shows police officers escorting a caravan of exotic luxury cars down the parkway. the problem is, they were traveling fast. speeds topped 100 miles per hour. >> it's a completely ridiculous story. shouldn't have happened. dumb thing to do. let me assure you, it's not the last dumb thing we will see happen. >> the caravan included dozens of sports cars like ferraris and lamborghinis. they were traveling at break-neck speeds. >>> president obama is on the campaign trail again today stumping for low interest rates on subsidized student loans.

. >> our shannon travis is in milwaukee, wisconsin, so shannon, what's the mood like in wisconsin just two days away before that primary? >> reporter: yeah, fred, i would say the mood is one of anticipation and resignation. you mentioned the polls are showing romney is doing well here. a lot of people certainly anticipate he'll have a strong showing, if not outright just take this contest. he's obviously gotten the trio of major endorsements from wisconsinites, senator ron johnson, paul ryan, as well as the endorsement of the newspaper, the milwaukee journal sentinel. he's certainly looking very strong. however, when i say resignations a lot of supporters for the other candidates are resigned that mitt romney's going to be the candidate, meaning not necessarily so happy about that. i don't know if we have a picture to she you. but i was at an event on friday, a newt gingrich event across from lambeau field, and there was a 64-year-old man who said he's torn between santorum and newt. he had this interesting sign that basically suggested mitt romney should join president obama and be hi