Two of the country's highest profile federal senators have forged a political alliance in an attempt to win more seats at the next election.

Nick Xenophon has secured the support of Tasmanian senator Jacqui Lambie following a trip to the north-west of the state last week, where he attended a community forum and bonded with Senator Lambie over fast food.

Senator Xenophon has also publicly backed Senator Lambie's controversial call for drug addicts to be forced into compulsory rehabilitation.

Both senators recently created their own political parties, the Nick Xenophon Team and the Jacqui Lambie Network, in an attempt to win senate seats across the country in the federal election, due next year.

In 2013, Senator Lambie only just scraped into Parliament for the first time with the backing of the Palmer United Party, but turned independent after an acrimonious split with Clive Palmer earlier this year.

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In contrast, Senator Xenophon has been in the Senate since 2007 and is an extremely popular figure in South Australia obtaining almost 25 per cent of the vote at the last election — and that has Liberal MPs in the state nervous.

Senator Lambie told 7.30 the potential power couple had made a handshake deal.

"Nick and I have spoken about preference deals but nothing's been set in concrete," she said.

"It comes down to a trust game, so there'll be no signing going on [but] if Nick says we're going to share preferences and we decide on that, we'll just share preferences."

The Tasmanian Senator said the Jacqui Lambie Network plans to run candidates in all six states, with candidates currently ready to go in three, including South Australia.

"We have candidates for about three of the states and you'll see them out running over the next four to six weeks," she said.

"I reckon you'll know some of them, absolutely.

"[They're from] scattered backgrounds, everything from education to health to veterans to military to anything from a transport driver — they'll be a mixture, absolutely."