DES MOINES --- Democrats are focused on early voting; they believe they could have victory assured in some states before Election Day.Republicans are focused on their ground operation, which they say has been building up for years and is poised to benefit the party up and down the ballot.With Election Day little more than a month away, the national party leaders took turns explaining to reporters why their respective turnout operations will prove superior when the ballots are counted.Hillary Clinton campaign manager Robby Mook said he thinks voter turnout in the election could exceed 2008 for the highest in the nation’s history.Mook also said he thinks more voters will vote early than ever before, and that in some states the Clinton campaign will be assured victory before Election Day.