This 2 April 2016 video from Nevada in the USA says about itself:
From DeathAndTaxes in the USA:
Sanders wins surprise victory in Nevada county convention
Jordan Freiman / April 3, 2016
In a result that most people did not see coming, Bernie Sanders came out of the Clark County convention on Saturday night with more delegates than Hillary Clinton, essentially flipping the results of the Nevada caucus from February.
Nevada has a three step process for assigning delegates to presidential candidates. Step one was the caucus, when 23 delegates were assigned. Step two was Saturday’s county conventions, which are used to select the delegates that will go on to the third step, the state convention, where the remaining 12 delegates will be assigned based on the proportion of delegates won in the county conventions.
According to the Las Vegas Sun there were 3,825 delegates, 915 elected alternates, and 604 unelected alternates at the Clark County convention (out of a possible 9,000, but an important part of being a delegate is actually showing up when needed). The final results in Clark County were 2,964 for Sanders and 2,386 for Clinton, which will allow Sanders to send 1,613 delegates to the state convention against Clinton’s 1,298.
Again, from the Las Vegas Sun:
What that means is the delegates from Clark County — along with the delegates selected by Nevada’s other counties Saturday — will attend the state convention in May, where they will help select delegates to go to July’s Democratic National Convention in Philadelphia. But, because of the way delegate-selection rules work in Nevada, they will only get to decide the proportion of 12 delegates — five pledged party leaders and elected official delegates and seven at-large delegates — that go to each candidate.
Saturday’s result does not affect the 23 delegates that were assigned in February’s caucus, but Sanders’ unexpected win in the county convention combined with the narrow margin of defeat from the caucus means he can now take the majority of delegates from Nevada.
Put far more simply by Sanders’ state director Joan Kato, “We pretty much won Nevada.”