Lauren Gambino with Cronkite News Service has more details at the East Valley Trib, including this argument from Clean Election's Todd Lang:
Lang argued against the bill before the Senate Judiciary Committee, pointing out that seven of the eight committee members had used Clean Elections money to fund their campaigns at some point during their careers.
“The door was opened for you through Clean Elections. Don’t close the door for others,” Lang said in his testimony. “Allow other folks to run, allow other folks to get their ideas out there into the marketplace of ideas and allow other folks to join the Legislature.”