In terms of percentage of eligible voters who bothered to cast a vote in the last presidential election, only ten states had lower participation rates than Indiana, according to a 2010 study by the U.S. Census Bureau. This year Hoosiers have a U.S. senate seat, the governorship and a host of other offices to elect. The vitriol greasing the tracks between the Lugar and Murdock camps offers a clue of how much is at stake in the May 8 primary when GOP members will scrap to see what narrative will define its camp heading into the November showdown. To participate in the primary and help determine what names will appear on the general election ballot this fall, voters must register by April 9. New voters, relocated voters or voters with name changes may visit the county clerk, their local license branch or indianavoters.com to ensure they are ready to hit the polls. Questions can be directed to 866-IN-1-VOTE.