Who is game enough to stand beside Donald Trump as a running mate?
Marco Rubio has said he won't run with Trump despite speculation, though Newt Gingrich and Chris Christie remain on the list.
And is Hillary Clinton really contemplating standing with another female?
Many have speculated Elizabeth Warren will make the step up -- but the Clinton camp has never made any indication of that, and it's understood they're looking at quite an extensive list.
Meanwhile Caitlyn Jenner has appeared on the cover of Sports Illustrated, 40 years after first appearing as Bruce Jenner after winning an Olympic gold at the 1976 Games.
This time she's wearing the same gold medal, and a glamorous gold jumpsuit.
Jenner first stepped out as a woman in June 2015, on the cover of Vanity Fair.
US Correspondent Patrice Howard joined Paul Henry from LA.