INDIANAPOLIS (AP) — Several potential Republican contenders for president will court gun-rights supporters at the NRA's annual convention Friday. Florida Sen. Marco Rubio, Louisiana Gov. Bobby Jindal, Indiana Gov. Mike Pence and former Pennsylvania Sen. Rick Santorum are set to speak at the convention's leadership forum, a kind of political pep rally and strategy meeting the NRA considers one of its premier events of the year. Jindal approved several gun rights bills last year, including one that creates stiff penalties for those who knowingly publish the names of gun permit holders.