From the Indianapolis Star:
With so few competitive races on their primary ballot, Hoosiers who typically vote Democratic might be tempted to ask for a Republican ballot in Tuesday’s primary election.
In fact, at least one group backing Sen. Richard Lugar is encouraging Democrats and independents to vote in the GOP primary.
Mailings from the Young Guns Network — a Virginia-based group set up by former aides of House Majority Leader Eric Cantor — sent to Hoosier homes remind voters that Indiana does not register voters by party.
That means there’s little to stop anyone from either party, or independents, from asking for a Democratic ballot in one election and a Republican ballot the next — or from voting in the general election against the candidate they’d crossed over to support in the primary election.
While voters can be challenged by someone who just doesn’t buy that they’ve had a primary election conversion to the other party, all voters have to do is sign an affidavit saying they’re going to support a majority of that party’s candidates. As an election guide issued by the Indiana secretary of state’s office notes, because ballots are secret, “there is no way to prove that the voter has made a false statement.”
It’s not unheard of, but leaders in both parties think it’s rare for true party faithful to ask for the other party’s ballot. In 2008, in fact, conservative talk-show host Rush Limbaugh urged Republicans to vote for Hillary Rodham Clinton over Barack Obama in the Democratic primary election.