In November 2010, Carles agreed to guarantee confidence and supply votes for the incumbent Colin Barnett Liberal minority government.

[2][3] She ran for re-election as an independent at the 2013 state election, but was defeated, finishing fourth behind the Labor, Liberal and Greens candidates with 5.49% of the vote.

She polled 27.6% of the vote against Labor Attorney-General Jim McGinty (38.7%), marginally less than Liberal candidate Brian Christie (30.2%).

In April 2010, Carles publicly acknowledged that she and Liberal Treasurer, Troy Buswell, had been engaged in a "mutual, albeit stupid" affair that lasted several months.

[7] Carles had previously denied the affair despite persistent rumours, claiming to be a victim of a Labor smear campaign.