Voldamort might win for the same reasons trump won.

Which reasons?

It's an important question - we have a very different political environment. That doesn't mean abhorrent reactionaries like Voldy won't take power, nor we won't see similar trends like you mentioned, but, for example, there is high voter turn-out due to mandatory voting and less voter disenfranchisement (~90% vs. 64%), our closest analogues to Trump (Palmer, along with their party leaders) are uptight and lack the public speaking skills to inspire confidence, they sound like generic posh politicians reading scripts rather than casual and approachable, with their party polling under 2%, and with the Lib-Nat Coalition nosediving after the US inauguration (similarly to the conservatives in Canada).

At least Trump was elected a few months before our election, so people can see what a piss-poor job he's doing, and what a load of bollucks his promises were.

It looks like at least news.com.au in Australia has turned on him a bit (Sky news though is still out there brainwashing people 150% though to make up for it)