Two high-profile metropolitan mayors, one who quit the Liberal Party and another who quit Labor, are the latest candidates running under Nick Xenophon's SA Best banner in the March election.
Port Adelaide Mayor Gary Johanson will run against Education Minister Susan Close in the seat of Port Adelaide, while Marion Mayor Kris Hanna will run in Gibson, against Opposition industry spokesman Corey Wingard.
Mr Johanson was a member of the Liberal Party for 14 years, including spending a period on its policy committee, but quit the party several years ago.
"I fell out with the Liberal Party for various reasons," he said.
"One in particular, they wanted me to attack the Labor Party in my position as mayor.
"Now the majority of our ratepayers would be most likely Labor supporters.
"Why would I attack the Labor Party, just because the Liberal Party wanted me to?"
Mr Johanson ran as an independent in the Port Adelaide by-election in 2012, and again in the state election in 2013.
He said he has been approached in the past by senior Labor figures to run for them, but said Labor has taken the Port Adelaide electorate for granted.
"The people have paid the penalty for being loyal to the Labor Party," Mr Johanson said.
"It has cost them dearly in jobs and education and opportunity."
Kris Hanna was first elected to state parliament in 1997 as a Labor MP, but resigned from the party and joined the Greens in 2003.
He was re-elected in 2006 as an independent, but lost his seat in the 2010 election.
Hanna's 'been to more parties than Kim Kardashian'
Premier Jay Weatherill said Mr Hanna has no association with the Labor Party.
"It's a bit of a stretch to call Kris Hanna a Labor bloke," Mr Weatherill said.
"I mean he's been to more parties than Kim Kardashian."
Mr Hanna said his values never changed, but the party politics have.
"Democracy isn't working. People aren't having a voice and I think one thing that's been consistent with Nick and I over more than 20 years is that we give the average person a voice, we give them a say," he said.
"This election actually sets an historic opportunity to set things right."
Mr Xenophon said he planned to announce more candidates before the close of nominations on February 26.
