Trump leads, followed by second tier of four candidates in ISU/Civiqs poll • News Service • Iowa State University

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Campaign Almanac: New poll shows Trump holding on to dominant lead in Iowa

Campaign Almanac: Caucus race static, Reynolds' endorsement unlikely to matter, new ISU poll says

Campaign Almanac: Another poll confirms Trump's big lead in Iowa

Desantis and Haley gain inches but Trump maintains strong lead in ISU/Civiqs poll • News Service • Iowa State University

Campaign Almanac: Another poll confirms Trump's big lead in Iowa

Latest ISU/Civiqs poll shows tighter gap between DeSantis and Haley • News Service • Iowa State University

Despite eventful campaign month, ISU/Civiqs poll finds little change among GOP voters • News Service • Iowa State University

Trump's campaign shouts 'rigged' as Iowa caucuses thrown into chaos

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Latest ISU/Civiqs poll shows tighter gap between DeSantis and Haley • News Service • Iowa State University