Boris Johnson to the Rescue? How the Conservatives Won the Radical-Right Vote in the 2019 General Election

How can centre–right parties in majoritarian systems adapt to threats from the radical right? Using a long-term inter-election panel study, we identify a remarkably stable constituency of support for Britain’s recent radical-right parties – the UK Independence Party and the Brexit Party. We show also how these same voters defected from the Conservatives across elections. In response, the government used a combination of the election of a new leader, Boris Johnson, and a hardline position on Brexit to reincorporate these voters into its support base, helping to lead to a large Conservative majority in 2019. Cross-party evaluations of Johnson were even more important in influencing this success than the issue of Brexit itself. Effective centre–right adaption to radical-right challenges is not simply about strategic issue positioning, it can also derive from centre–right leaders with populist appeal.