Trump's lead in Iowa collapses from 18 down to 4 points in new poll.
Trump now only leads Harris by 47% to 43% in Iowa.
Harris has dramatically improved on Joe Biden’s performance; Biden trailed Donald Trump by 18 percentage points in a June.
80% percent of Harris’ supporters say they are... enthusiastic about her... compared with 74% of Trump’s supporters.
Trump leads with men 59% to 32% over Harris. And Harris leads with women 53% to 36%.