Cory Bernardi leaves politics, with his mission largely fulfilled. The Australian right has been remade, if not exactly in his image, at least in something uncomfortably like it.
Some Democrats worry that their nominating process can be taken hostage by extremists in the way the Republicans' was four years ago. This is one of the problems of presidential systems.
It's election day in the United States. Control of the Virginia legislature is up for grabs, together with a bunch of other things.
Three months out from the start of the US primary season, one of the top Democrat candidates has already bowed out, and another is barely hanging on.
No-one is surprised to find that politicians lie. But how should the media respond when a particular side of politics inhabits an entire ecosystem of lies?
The Democrats have set out on the road towards impeaching Donald Trump. There are echoes of Watergate, but the Republican Party has changed a lot in 45 years.
The paradox of David Koch, who died last week, is that his political activism ended up empowering forces that were deeply hostile to his libertarian convictions.
Australia and the US both apportion seats on the basis of population, but use different approaches to drawing boundaries. It could become a political issue.
Donald Trump's attempt to politicise the census has failed for now, but it raises interesting issues about how representation is supposed to work.
With nine months until voting starts, the campaign for the Democrat presidential nomination is well under way – with, so far, six front-runners.