WHAT is easily more annoying than Kevin Rudd, Tony Abbott and Christine Milne combined?

The arrogant, sanctimonious voter who believes anyone who disagrees with their political opinions must be a complete idiot.

Last night the internet was clogged with praise for a supercilious new website called "Don't be a f**king idiot this Saturday".

The profanity-filled site is a tirade against the supposed stupidity of Coalition voters. It says anyone who votes for an Abbott government on Saturday is "a credulous ignorant fool", "a selfish d**k" and "a stupid f**king mouth-breathing idiot".

This garbage has been "liked" by 274,000 people on Facebook so far. Every last one of them needs to learn some humility.

Many of these people have spent the last three years denouncing the aggressive attitude of Tony Abbott's opposition. They were outraged when Abbott attended a carbon tax protest alongside a handful of rude signs. But when witless bile is directed at the other side, the hypocrites cheer.

That isn't surprising. Hypocrisy is a standard personality trait of politicians and their rusted on supporters.

The arrogance is far worse. Labor and Greens voters do not have a monopoly on intelligence or morality. Many seem to think they do.

Not a fan of government debt? Well, clearly you don't care about health or education, they say. Want to "stop the boats"? You're a racist. Didn't like Julia Gillard? You're a sexist. Opposed to gay marriage? You're a homophobe.

There are far too many racists, sexists and homophobes in Australia, but they don't all vote for the Liberals, and not all Liberal voters are bigots.

You can find a valid line of reasoning behind virtually every Coalition policy if you care to look. The same can be said of Labor's policies.

Too many people, on both sides of the political debate, don't look. They can't be bothered. Calling people with different political opinions "stupid" or "immoral" is far easier, and it doesn't force anyone to re-examine their own prejudices.

Take one example. On spending, the Liberals argue that debt accumulated now must be repaid with interest later, and the long-term cost isn't worth it. They say reductions in taxes and regulation can offset the damage spending cuts would do to economic growth.

You're perfectly free to disagree with that argument. It isn't bulletproof. But calling it "ignorant arse-backwards economic policy that will f**k us for a long time" is slightly over the top, and labelling anyone who subscribes to that policy a "credulous c**k" certainly won't convince them to change their vote.

Abusing Tony Abbott or Kevin Rudd is one thing. Politicians volunteered for public life and made themselves fair targets.

Your fellow voters didn't. They have a right to form their own political opinions, and to vote for whoever they damn well please, without automatically being condemned as idiots.

Nobody is right about everything. Not even you.

Please direct your "witless bile" at @SamClench on Twitter.

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