Tim Nicholls has blamed the effect of a 27-day state election campaign for a slip of the tongue in which he almost urged voters to support One Nation at Saturday's poll.
The Liberal National Party leader tripped up during a round of interviews with breakfast television shows on Friday.
"If you want a stable majority government ... then the best thing to do is to support your LNP, One N, uh, LNP candidate at the election," he said on Seven.
He later told reporters the stumble was down to the long days on the hustings.
"Look, it's been a long campaign," he said from Pumicestone, the first stop on his southeast seat blitz on Friday.
"I was simply going to say that you need to vote one for your local LNP candidate as I've probably said 500 times during this election campaign."
Mr Nicholls has been dogged by the possibility of his party having to do a deal with One Nation to form government, but he's insisted there will be no coalition or cabinet position for the ultra-conservative party.
Instead, he's been pushing for voters to put the LNP first to ensure majority government, warning that One Nation has irresponsible and inexperienced candidates.
His party will preference One Nation ahead of Labor in a majority of the state's 93 seats.
