The Nationals have a new leader, but who exactly is Michael McCormack? And Senator Michaelia Cash is under fire over threats to name female staffers in Bill Shorten's office who have been the subject of "rumours". Author and presenter of The Drum, Julia Baird, joins Fran Kelly and Patricia Karvelas on The Party Room. Tweet #ThePartyRoom or send an email to ThePartyRoom@abc.net.au.