Indiana's top elections official and leaders of both political parties are working to get more residents to vote in the polls in November. The May primary saw just 13 percent of Indiana's more-than 4-and-a-half million registered voters cast a ballot. And with the November ballot lacking marquee races, officials fear that could lead to the lowest general election voter turnout in state history. Republican Secretary of State Connie Lawson has launched a $750,000 nonpartisan get-out-the-vote advertising campaign. Republican and Democratic parties also are encouraging supporters to show up at the polls by going door to door and using social media.