Senator BIRMINGHAM (South Australia) (14:29): Mr President, I ask a supplementary question. Why will a typical South Australian small business's electricity bill rise by hundreds of dollars a year as a direct result of the carbon tax and associated climate change policies, when Ms Gillard told a lie at the last election promising that there would be no carbon tax under the government she leads? Mr President— Senator Jacinta Collins: Mr President, on a point of order: I ask you to ask Senator Birmingham to retract that comment. Honourable senators interjecting — The PRESIDENT: Order! Senator Brandis? Senator Brandis: Mr President, on the point of order: when I took a point of order against Senator Wong, who accused Senator Cormann of telling a lie in his question, you ruled that it was not out of order for Senator Wong to phrase her response in that way. Senator Birmingham has used, quite deliberately, precisely the same phrase— Senator Jacinta Collins: That is not true! He did not use precisely the same phrase. The PRESIDENT: Order! No, there were not precisely the same terms there, Senator Brandis, thank you very much. Senator Birmingham, you should withdraw that. Senator BIRMINGHAM: Mr President, I withdraw and ask the minister why South Australian small businesses will face this price increase, given the lie that was told at the last election about there being no carbon price under a Gillard government.