Simon Heffer: How Bernie Sanders is giving Hillary Clinton a run for her money in US presidential race
Clinton was favourite to be Democrat candidate in 2016 but the Vermont Independent is taking over.
US election 2016: Hillary Clinton focuses on equality in economic policy speech
"Inequality is a drag on our entire economy," Clinton said.
US election 2016: Democrats Hillary Clinton and Bernie Sanders bring their A game on Facebook
New data released by Facebook show the two candidates are outpacing Republicans in Iowa and New Hampshire.
Angry Neil Young tells Donald Trump to stop using Rockin' in the Free World NOW
Young backs Vermont Senator Bernie Sanders
US election 2016: Bernie Sanders 1972 essay claiming women fantasise about rape resurfaces
The Democratic candidate's team said the piece was 'a dumb attempt at dark satire'.
US Election 2016: Democratic candidates to appear in six presidential primary debates
Iowa, New Hampshire, Nevada and South Carolina will host four of the debates, the Democratic National Committee announced on 5 May.
US election 2016: Hillary Clinton welcomes Bernie Sanders to Democratic presidential primaries
Clinton tweeted, 'I welcome him to the race.'