If you haven't pre-polled, Saturday is one day that almost all Australian adults have to leave the house to vote, rain, hail or shine.
So what's the weather doing around Australia this election day?
Jackson Brown from the Bureau of Meteorology said coastal and parts of inland Queensland could expect plenty of rain, with Brisbane set to cop between 25 and 35 millimetres.
The rain will extend into New South Wales, where Sydneysiders can expect between 8 and 20mm.
"There's a very large, strong high-pressure system off the west coast of Tasmania," Mr Brown said.
Canberra is likely to be partly cloudy with a top of 16.
"But Perth is my pick of the capitals," Mr Brown said.
Sunny conditions and a top of 25 is forecast for Western Australia's capital.
Mr Brown predicted uncharacteristically humid conditions for this time of year for Darwin, which will reach 35.
"I think they'll be hanging out for the dry season and more pleasant conditions for voting," he said.
Can the weather influence election results?
In some parts of the world, weather on election day can even swing a result, according to economist Tim Harcourt from the University of Technology Sydney.
"It really matters in countries that have voluntary voting," Professor Harcourt said.
The economist said a reduction in turnout generally favoured candidates with more educated, higher-income voters.
"People really fret in the US or the UK about the weather on the day because if it's freezing cold or raining, people just won't turn up," Professor Harcourt said.
"So the weather can actually swing a result."
'Voters got grumpy'
Professor Harcourt said election-day weather mattered in Australia too.
"In 1979, [then South Australian premier] Des Corcoran, the Labor leader who succeeded Don Dunstan, went to the election early and Adelaide had an unusually wet week, including election day," he recalled.
"On top of this, there was a bus strike.
"And he lost in a very surprise result, so some people say don't call an election when there weather's bad, or there's a bus strike."
Rain favours Republicans
In the US, Florida State University researcher Brad Gomez crunched decades of election results and weather data to conclude two presidential elections — 1960 and 2000 — were swung by the weather.
He found that for every inch of rain a county received above its average rainfall, turnout decreased by about 1 percentage point, favouring Republicans.
In the unusually dry election of 1960, Richard Nixon lost in an election to John F. Kennedy. Mr Gomez said he might have won, had there been average rainfall.
In 2000, rain in Florida suppressed voting just enough to give George W. Bush the presidency over Al Gore, according to Mr Gomez.
Will rain in the east affect this election?
Professor Harcourt thinks this weekend's weather could have some small effect on voter turnout.
"I reckon there would be some people who'd risk the fine and if there's a flood or there are dreadful conditions somewhere, they'll take the punt and not turn up," he said.
"If you assume bad weather would help the Coalition a little bit because Labor people wouldn't get to the polls, then the rain in Queensland and New South Wales is good news for the Coalition.
"Having said that, in regional areas the Nationals have some lower-income voters who they want to turn up, so that evens things out.
"Labor would want every state and territory [to have] the sun shining, I would think."
