If Trump fails to win the presidency, he may still leave a big impression on US politics. In fact, he may be the first in a series of such populists.
The state of America
The US election has been full of bizarre events. It is tempting to see the rise of Donald Trump as an accident – in normal times backstage negotiations would have prevented him getting a majority in the Republican primary. But as the historian Daniel Rodgers explains, the US political system is so fractured that the rise of a new type of abrasive candidate is now normal.