Primary Determiner News Today

>> passions are high, that is a primary determiner of voting. you dont vote when youre apathetic and happy with what is going on around you. you vote when something is meaningful and you want to participate. >> reporter: experts caution both parties emphasized getting voters to cast their ballots early. it may not boost support as much as they are banking ahead of election day. >> lets look at latest polling on party enthusiasm and dig into a critical state with the editor of the halftime report...