Indiana Secretary of State Todd Rokita says there are 500,000 new and updated voter registrations in Indiana.   Rokita says that brings the number of voters in the state to 4.4 million and there are still six weeks to go before voter registration ends.  More than 200,000 of those registrations are new voters.  In 2004, Indiana saw 565,000 new and updated registered voters.   A spokesman says they could get between 700,000 and 750,000 new and updated registered voters by the time voter registration ends in October.