Steve Dickson's decision to join One Nation from the LNP means he has been transformed from a low-profile Opposition backbencher to a potential powerbroker in the Queensland Parliament.

Pauline Hanson remains One Nation's party leader, but it will be Mr Dixon's job to lead the charge in the Sunshine State ahead of an election that could occur in 2017.

The Member for Buderim on the Sunshine Coast was first elected to the Queensland Parliament in 2006, and previously served as former premier Campbell Newman's racing and national parks minister.

He will now sit on the cross bench in Queensland's delicately balanced 89-seat Parliament.

With Labor serving as a minority government, Mr Dickson could be one of the people it calls upon for support if its legislation is blocked by the Opposition.

What does Steve Dickson stand for?

Since 2015, Mr Dickson has used his platform as a state politician to call for medicinal cannabis to be legalised for people with chronic illness.

He made an impassioned plea on the floor of Parliament to declare it was not good enough that people had to "turn to black market options" to find relief from debilitating and life-threatening conditions.

Mr Dickson (right) at Parliament in 2007, a year after he was originally elected for the conservatives. ( AAP: Dave Hunt )

Mr Dickson choked back tears in this morning's press conference when he said the issue had led him to quit the LNP.

"I'm drawing a line in the sand. I believe we have to put people before politics," he said.

"I also believe the two major parties have lost their way.

"This is an opportunity to find their way back, to grow a backbone and grant amnesty for these young people who need this life-saving drug just to stay alive."

Mr Dickson has also been a vocal opponent of sharia law, but has previously said he does not oppose Islam or mosques.

"If we allow that [sharia law] to slowly creep into our country we're going to have big trouble and we need to do what we can to stop it now," he told the Sunshine Coast Daily in 2015.

Mr Dickson's stance on Islam seems to be significantly softer than the One Nation policy, which is calling for a royal commission into the religion, surveillance in mosques and a halt to Muslim immigration to Australia.

Before entering Parliament, Mr Dickson was a small business owner and served on the Maroochy Council.

Friendly relationship with Hanson

Mr Dickson and Senator Hanson have enjoyed a friendly relationship in recent months.

Mr Dickson invited the One Nation leader to his Buderim electorate last year for a tour, and she later announced she would not be standing a One Nation candidate against him at the next Queensland election.

Mr Dickson and Senator Hanson at a press conference, where his move was announced. ( ABC News )

However on Friday, Senator Hanson denied she struck any deals with Mr Dickson last year.

"I believe it was through sheer frustration that Steve felt he was unable to be a voice for the people of Queensland in his electorate and that's why he got into politics," she said.

"He wants to feel as if he is worth something ... not just being a yes person for the major political parties and that's what has happened with a lot of our politicians."

What does this mean for Queensland Parliament?

It is the first time in eight years that One Nation has had an MP in Queensland's Parliament.

Mr Dickson's move complicates the make-up of the current hung parliament, where Labor needs the votes of three crossbenchers to win any division.

Mr Dickson's Buderim billboard was originally emblazoned with the LNP logo, but was recently changed. ( ABC News: Bruce Atkinson )

The Palaszczuk Government has lost a handful of votes, but only one piece of legislation has failed to pass.

That was when independent MP Billy Gordon sided with the Opposition to block moves to tighten restrictions on tree clearing.

Adding another crossbencher in the mix will make negotiations on contentious legislation more complicated.

For the LNP, one fewer MP makes passing its own legislation, or frustrating the Government, a harder task.

One Nation held 11 seats in Queensland after the 1998 election, but imploded soon after.

Dalrymple's Rosa Lee Long was the last One Nation member, losing her seat in 2009.

A state election is due by early next year.