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just days before the iowa caucuses. the former new jersey governor declining to endorse any of his republican rivals, at least for now, even as he urges he supporters to choose a candidate with character. this comes as we're just now a few hours away from cnn's republican presidential debate later tonight, nikki haley and ron desantis about to come face to case for the final time before the iowa caucuses. it's a critically important test as both candidates try to close the gap with donald trump. i'm wolf blitzer, you're in "the situation room." >> announcer: this is cnn breaking ne...

Voters have a clear choice in this election. the chaos and drama of the past or a new generation of conservative leadership. i will fight to earn every vote so together we can build a strong and proud america. your reaction? >> that's looking for an endorsement, i would say. [ laughter ] >> you know, you're a great guy, chris christie, and we've been friends for many years, and so please endorse me. but i didn't see that forthcoming tonight. it could come at some point, i guess, but unless he sees her get tougher on donald trump, i just -- i don't see where that goes. >> i think it's stuff tou...