>> you don't know anybody voting for desantis? >> no. >> nikki haley? >> no. you don't even see one sign for any of them. i might see a few desantis signs. but neal? please. >> why are trump supporters going to be the ones to show up tomorrow night? >> in my mind we saw what happened in the last election. even though there was a lot of support, he still lost. i think it's going to be huge numbers tomorrow. >> reporter: i met a number of folks, ana, like betsy, that first woman you heard from. she's a semi truck driver. notably she didn't register to vote until the 2020 election. she didn't even take part in the caucus eight years ago for donald trump, saying she got involved in politics because of him and she will do whatever it takes to get out there and show her support and caucus for him. in our new nbc news/"des moines register" poll, donald trump is winning first-time caucus-goers with 56% of support.