US votes 2020
Russian accounts meddling in US election harder to detect
The Russian improvements make it harder for voters and social media platforms to identify the foreign interference, Kim said.
- by Amamda Seitz
Latest
Elizabeth Warren
Elizabeth Warren drops out of 2020 Democratic presidential race
Warren had banked on a strong showing on Super Tuesday after a string of disappointing finishes in the early states, but she trailed far behind front-runners Bernie Sanders and Joe Biden.
Analysis
Analysis
Why Michael Bloomberg's expensive failure is Joe Biden's gain
Bloomberg's departure cements Biden as the only moderate candidate left in the Democratic race - and the clear favourite to take on Trump in November.
- by Matthew Knott
Michael Bloomberg
Michael Bloomberg drops out of Democratic race, endorses Joe Biden
Bloomberg spent at least $948 million on his short-lived effort to win the Democratic nomination but bombed out in the crucial Super Tuesday contests.
- by Matthew Knott
USA
Too close: Protesters reach for Biden raising questions about security
Biden was only a few words into his Super Tuesday speech when he suddenly had an unexpected visitor on the platform - a protester.
- by John Fritze, Bart Jansen and Chris Woodyard
Updated
Joe Biden
'We expected a surge. We got a tsunami': Biden supporters ecstatic at Super Tuesday wins
The former US vice-president is expected to pick up the most delegates on offer and emerge with an overall lead, an unthinkable prospect just days ago.
- by Matthew Knott
Analysis
Analysis
Generational rift exposed as Joe Biden stages a comeback for the ages
With Biden's campaign back from the dead, the Democratic Party faces an almighty schism, with older and younger voters divided on how to defeat Donald Trump.
- by Matthew Knott
Explainer
Joe Biden
Spectacular, expensive, complicated: how the Democratic primaries work
Who will go up against Trump at the presidential elections in November? Democrats are deciding in a series of contests involving rock bands, streamers and fierce debate. How do the primaries work?
- by Matthew Knott
Opinion
Bernie Sanders
Why I'm voting for Joe Biden on Super Tuesday
There are only imperfect candidates to take on Trump so I'm looking for the anti-Bernie with the best chance to beat him.
- by Bruce Wolpe
Analysis
Joe Biden
Anyone but Bernie: moderate Democrats unite behind Joe Biden
Democratic Party moderates are rapidly swinging behind Joe Biden, united by a common goal.
- by Matthew Knott
Updated
Joe Biden
Amy Klobuchar drops out of the Democratic race, will endorse Joe Biden
The field of Democratic presidential candidates is contracting rapidly, with Minnesota Senator Amy Klobuchar the latest to drop out of the race.
- by Matthew Knott