The evidence is in. 

Jeremy Corbyn has done as Malcolm Turnbull almost did and Bill Shorten definitely did and Anthony Albanese is now doing: destroy the governing prospects of their parties — by leaning too far left. This is the reality evident after the recent elections in Australia and most recently the UK. By contrast, Donald Trump in the US, Scott Morrison in Australia and now Boris Johnston in once-again-Great Britain are leading on the political road back to the right.  

And if the UK and Australian elections in 2019 are milestones on that road, the US Presidential election in 2020 will be the next big one, as Trump is re-elected, quite possibly with a larger majority. Why do...