and local iowa climate change leaders and advocates. and what you're really seeing is this campaign trying to tap into the energy that you see among democrats on this issue of climate change. this is an issue that democrats list as one of their top issues. and of course, the people here are not all committed to bernie sanders just yet. we talked to a lot of undecided voters here. listen to the conversation i had with two undecided voters just earlier today. >> the energy needs to be towards what we're going to change, because everyone knows about trump. we've seen him for four years, three years, doing what he does, and it's just like, okay, we get it. everyone wants him impeached, but what are you going to do besides that? you know, i don't want that to be the basis of anybody's conversation with us. >> i feel like also focusing on climate change l because that's like a huge issue that our generation is dealing with right now. >> right. >> so i feel like that should be like one of the main focuses. >> reporter: and we spoke to a lot of voters who are just happy to see alexandria ocasio-cortez, who have seen senator sanders before but was brought back because of congresswoman