21 MAY 2019 - TIPTON, IOWA: OTIS ARMSTRONG, right, wears a Beto O'Rourke sticker during an O'Rourke campaign event in Tipton, IA. O'Rourke, running to be the 2020 Democratic nominee for the US Presidency, has made climate change a central part of his campaign. He held a town hall in Tipton Tuesday. Iowa traditionally hosts the the first election event of the presidential election cycle. The Iowa Caucuses will be on Feb. 3, 2020. PHOTO BY JACK KURTZ
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