Quiz: Australian PM or celebrity marriage -- which lasted longer?

(CNN)From Kevin Rudd to Julia Gillard, back to Rudd and then to Tony Abbott, it seems Australia can barely keep one leader for a single term in office. Less than a year ago, Abbott was ousted by his longtime rival Malcolm Turnbull.

Australians will be voting in their first general election since 2013 on Saturday July 2 -- if Labor Party leader Bill Shorten wins, he'll be Australia's sixth Prime Minister in six years.
Can you guess which of Australia's roulette wheel of leaders survived longer than these celebrity marriages?