What 58th quadrennial American presidential election did Bernie Sanders announce his candidacy for the Democratic nomination for President of the United States?
Political positions of Bernie Sanders:  In 2015, he announced his candidacy for the Democratic nomination for President of the United States in the 2016 election. United States presidential election, 2016: The United States presidential election of 2016 was the 58th quadrennial American presidential election, held on Tuesday, November 8, 2016.
The United States presidential election of 2016