In elections for President of the United States and United States Senate held in Iowa today, 10/30/08, five days until votes are counted, Democrats Barack Obama and Tom Harkin easily win their contests, according to this latest SurveyUSA poll conducted exclusively for WHO-TV Des Moines and KAAL-TV Mason City. Today, it's Obama 55%, Republican John McCain 40% in the Presidential race. Obama's lead comes almost entirely from women, where he leads by 27 points. Among the 32% of respondents who tell SurveyUSA they have already cast ballots, Obama leads by 40 points; Obama leads by 3 points among those who tell SurveyUSA they have not yet voted, but will. In the US Senate race, Harkin leads Republican Chris Reed 61% to 35%. 800 adults interviewed 10/28/08 and 10/29/08. Of them, 741 were registered to vote; of them, 658 were determined by SurveyUSA to have already voted or to be likely to vote on or before November 4.