'Large-scale changes' unlikely in post-election Turnbull Cabinet

Malcolm Turnbull's reshuffled Cabinet is unlikely to include many surprises, though a few fresh faces are expected in the wake of the Coalition's near-death experience in the federal election.

Mr Turnbull, having already shaken up the frontbench in the wake of Nationals leader Warren Truss's departure from politics in February, has said "large-scale changes" aren't on the cards.

But the Prime Minister will have to shift a few bodies to accommodate the holes once filled by Assistant Ministers Wyatt Roy and Peter Hendy.

There is also the likely but yet-to-be-confirmed loss of Tourism Minister Richard Colbeck to contend with.

The closest thing to a sure bet is the ascension of Nationals senator Matthew Canavan, who is currently orbiting in the outer ministry, with some speculation that at least one other Nationals MP might make the cut.

There might, however, be some changes to ministers' portfolios. According to Fairfax, Assistant Treasurer Kelly O'Dwyer could be set to lose small business to a Nationals minister following a lacklustre election effort.

There are 30 places to fill in the cabinet and outer ministry, with assistant ministerial positions limited to 12.

Mr Turnbull is expected to make the announcement later today.