Democrat Bill de Blasio faces long odds but promises local knowledge to beat ‘Con Don’

US presidential contenders face a conundrum as trade war intensifies

African Americans hold key to nomination of party’s presidential challenger

Ex-vice-president’s quip of being the ‘only real Irishman’ sparks offer from rival John Delaney

A short guide to the candidates hoping to take on Donald Trump

Democratic presidential hopeful lays out his credentials for beating Donald Trump

Democratic contender’s first-day haul will ease concerns over grassroots fundraising

Attendance at private function underlines ex-vice president’s urgent need for cash 

Ex vice-president faces questions over his age, gaffes and behaviour to women

California senator is second major presidential contender to demand Congress acts

Electoral system security has not improved since Moscow’s alleged interference in 2016

Political stars converge on small farm state seen as key for establishing momentum

Former vice-president is seen as a potential steady hand despite doubts over his age

Charismatic Texas Democrat joins crowded field hoping to take on Trump

Former New York City mayor cites crowded Democratic field of contenders for decision

2020 contender has had low national profile but a big presence in first caucus state Iowa

The end of the special counsel’s probe will lead to a fierce fight about what is made public

Former Colorado governor bets party will want a candidate from beyond the Beltway