The Conservatives have emerged as the dominant force in English politics after a string of surprising wins in key constituencies. Significant gains in the marginal "killing fields" helped the party to a comfortable majority. In a night of upheaval, seats previously considered Labour and Lib Dem strongholds turned blue as results trickled in. Several high-profile names including Ed Balls and Vince Cable lost their seats. Failure to win key marginals, combined with Labour losses in Scotland, prompted Ed Miliband to stand down. Meanwhile, Nick Clegg resigned as Liberal Democrat leader after his party suffered heavy losses and UKIP leader Nigel...