By Erin Murphy, Gazette-Lee Des Moines BureauDES MOINES — Optimism abounded in Iowa on the eve of Election Day as state leaders with the Democratic and Republican parties took turns Monday espousing visions of victory.Most polls have shown a close race in Iowa between Republican Donald Trump and Democrat Hillary Clinton.Last week, Loras College showed Clinton with a 1-point lead, Simpson College/RABA Research showed Trump with a 3-point lead and the highly-regarded Des Moines Register Iowa Poll showed Trump with a 7-point lead.“I think Iowans have spoken loud and clear once again what they think of (Clinton) and what they think of her trying to enter the White House,” said Jeff Kaufmann, the state Republican Party chairman, during a conference call with reporters.Democrats were optimistic their campaign organization would deliver the state for Clinton.“Our early vote is good.