Bernie Sanders takes key step in US presidential race Bernie Sanders on Thursday filed for the New Hampshire primary and addressed a crowd of around 1,000 supporters outside the State House. The pilgrimage to Concord to sign the official paperwork and pay the 1,000 dollar fee has long been part of US electoral tradition in the state that holds the earliest presidential primary, set for February 2016. Candidates will be making there way here at intervals until November 20th. IMAGES AND SOUNDBITES