our alina muchado is there at the rally with the very latest. alina? >> reporter: yeah, fredricka, donald trump has been speaking now for about 30 minutes, and he's actually talked about a lot of the same themes we've heard at other rallies, including hitting topics about immigration, namely, building that wall down at the border. and when he talked about that, he got a lot of cheers. but he's also talked about these polls. and he's focused on the polls that favor him, particularly how he's ahead here in florida. he did mention those two polls that have him trailing ben carson in iowa, and he seemed to downplay those results, saying that he doesn't believe those polls and actually criticized them and drew some questions about their credibility. that having been said, he did throw some jabs at ben carson. here is part of what he had to say. >> bush is failing. he's a very nice person. highly low on energy. he really is.