J.D. Vance and Marco Rubio are emerging as early contenders to inherit leadership within the Republican Party following Donald Trump. A recent event showcased Vance's engagement with press tactics characteristic of Trump's political style.

An early glimpse of the battle to succeed US President Donald Trump atop the Republican ticket played out last week in classic Trumpian fashion when Vice-President J.D. Vance was temporarily demoted to play press secretary. His hour-long spell fielding questions from the White House “lion’s den” press corps included statements chiding the media and the obligatory denial for ambitious politicians. “This is crazy. You guys have got to behave yourself,” he told reporters, before adding: “I’m not a....