Monday, April 9, is the deadline to register to vote in Indiana.
There is no party registration in Indiana. Anyone registered to vote can vote for Ron Paul in the Republican primary.
Check your voter status online here.
Register to vote online here.
In order to register online, you must have a current and valid Indiana driver's license or Indiana State identification card.
If you cannot register online, you can register to vote by paper here.
The paper voter registration form must be postmarked with a date of April 9 or earlier or hand delivered to your county voter registration office (locations on second page of voter registration form) by end of day April 9. You can also register in person at any BMV license branch.