Queensland Opposition Leader Deb Frecklington has been referred to the state election watchdog by her own party.
The LNP referred Ms Frecklington over concerns a series of fundraising events could have violated laws aimed at curbing the political influence of property developers.
One LNP dinner in August resulted in $28,800 being donated.
This comes just weeks before Queensland heads to the polls on October 31, where Ms Frecklington is hoping to beat Annastacia Palaszczuk to become the state's Premier.