Independent senator Nick Xenophon believes his party has a big chance of unseating dumped minister Jamie Briggs in one of the government's safest seats in South Australia.
There's a possibility the Xenophon team could have three senators and a lower house MP with Rebecca Sharkey polling well in the Adelaide Hills seat of Mayo.
"Rebecca has got a really good chance of causing a massive upset," Senator Xenophon told ABC Radio on Wednesday.
Senator Xenophon said he would be shocked if Prime Minister Malcolm Turnbull lost the July 2 election.
"I still think it's Malcolm Turnbull's election to lose," he said.
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"I'd actually be quite shocked if Malcolm loses."
