NEWS.com.au | Getting to know Rex Patrick - the man set to fill the Senate vacancy left by Nick Xenophon NEWS.com.au THE South Australian parliament will today hold a joint sitting to fill the Senate vacancy left by Nick Xenophon. But who is the man set to fill Mr X's shoes? Tim Dornin. AAPNovember 14, 201710:20am. Video; Image ... Rex Patrick, the new SA Senator for the Nick Xenophon Team outlines history and priorities SA's latest Senator Rex Patrick |