Billson may quit politics after demotion

Liberal MP Bruce Billson says he may leave politics at the next election after being dumped as small business minister when Malcolm Turnbull took over as prime minister.

Mr Billson was offered the new cities portfolio, but has told The Australian he considered the offer a demotion and raised the prospect of quitting with Mr Turnbull.

"I said to him ... I can't guarantee to you that I will recontest the next election under those circumstances," he said, adding that he will consider his future over Christmas.