Indiana voters are at the polls today, casting ballots in a closely-watched US Senate primary race. Republican Richard Lugar is seeking another six-year term in the Senate, but is facing his toughest primary challenge ever from Republican State Treasurer Richard Mourdock.
The Hoosier State also has three open congressional seats, which were created by the departures of Representatives Mike Pence and Joe Donnelly, who are running for other offices, and the retirement of Congressman Dan Burton.
The winner of Tuesday's Lugar-Mourdock contest will face Democrat Joe Donnelly in the November general election.
Despite the attention paid to the GOP Senate primary, anticipated voter turnout in Indiana is only expected to be about 20%.
President Barack Obama and Mitt Romney are expected to easily win Indiana's presidential primaries.