Barack Obama is one. So is Joe Biden. And so are Democratic lawmakers from around the country. They’re the “superdelegates,” and Americans are going to hear a lot more about them soon.

This is why: in the race for the Democratic presidential nomination, Hillary Clinton already has a lead among this group. Superdelegates are party officials who may back any candidate they like in a state’s nominating contest — no matter who wins its primary or caucus. The superdelegates make up about 30% of the total number of delegates needed to win the Democratic nomination.

More at Source: Here are the ‘superdelegates’ that stack the Democratic race toward Clinton – MarketWatch