Will the Tories’ election gamble pay off? Or will Boris Johnson follow in the footsteps of his predecessor and regret his decision to call a snap poll? Win or lose, the Boris’s fortunes are likely to be decided in a handful of marginal seats up and down the country. If the Conservatives can win back Brexit party voters – and also stave off a challenge from the Lib Dems – then PM Boris could enjoy the kind of healthy majority which eluded Theresa May.