Amid the welter of commentary and post-mortems among Democrats to explain Kamala Harris’ loss to Donald Trump, there is one theory that has received widespread acceptance. The Democrats made a serious tactical mistake in concentrating too much on Trump, and spent too little time promoting positive messages about Harris.

Admittedly, Harris was an awful candidate – hectoring, annoying, a platitude-mongering avatar of political correctness, faced with the difficult task of defending an incumbent administration at a time when most Americans felt worse off after four years of the Democrats. She was hard to sell.

Labor can keep trying to convince voters that Peter Dutton is unelectable, but Kamala Harris made that mistake with Donald Trump.Credit: Alex Ellinghausen, AP

Nevertheless, the main pitch of the Democrats’........

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