Americans appear to be unified for once, as this was the number one response among every age group, income group, ethnic group, political affiliation and regardless of gender.  When asked about the biggest risk to the U.S. economy over the next 6 months, more than 6-in-10 Americans stated the upcoming presidential election, according to a new study by Bankrate.com. Greg McBride, CFA, Bankrate.com’s chief financial analyst speaks with Les Sinclair about the survey.