Agriculture Minister Bridget McKenzie is resisting demands to resign from the Morrison government's front bench as the Prime Minister says he will not pre-judge the findings of the review into her conduct as a minister.

There are growing doubts within government ranks as to whether Senator McKenzie will survive the growing scandal over her administration of a sports funding program, which has engulfed the Coalition since a damning audit of the scheme was handed down last week.

Several government sources have told The Age and The Sydney Morning Herald she has been encouraged to stand down before parliament returns in early February.

Senator McKenzie's office said on Thursday she would not be resigning and was "confident" she had not breached any ministerial standards by failing to declare she was a member of a shooting club she later presented with a $36,000 grant.