latest. >> reporter: we are now in these very crucial closing days to the iowa caucus and probably nobody has more at stake than florida governor ron desantis. who has put so much into iowa. he and his campaign have poured time and millions of dollars into their organization in this state. he's visited all 99 counties. the full grassley, a tip to chuck grassley, the senator from here. an he talks about that on the road. he talks about how he spent a lot of time here and his wife has spent time here and his children. they're hoping that will impress upon the voters here how serious that he is. the closing pitch that we've heard from him leading up to the caucus is that donald trump is in this for his own self interest and nikki haley is serving the donors and he's the only running on behalf of the people. to back up the message, his superpac aligned with him has spent so much time and money