Sen. John McCain, R-Ariz., former Sen. John Edwards, D-N.C., and Sen. Chris Dodd, D-Conn., have confirmed their attendance to speak at Iowa State’s Biobased Industry Outlook Conference on Nov. 5. The forum will take place at 7:30 p.m. at Hilton Coliseum and free tickets will be available starting Tuesday. Each candidate will be given 15 minutes to speak about the bioeconomy.