A whopping 1.5 million people living in the key state of California have registered to vote since the beginning of 2016, a whopping 218 percent increase from the same time in 2012.

It is safe to assume that a large number of those registrants come from engaged young voters who are much more likely to cast a ballot for Democratic underdog Bernie Sanders.

Though Hillary Clinton still enjoys a significant lead over Sanders in delegates and votes, a big win for Sanders in California could go a long way in convincing Superdelegates that he could be a better choice in the general election. This choice takes on a particular significance  considering the growing controversy around Clinton’s emails which could threaten to sink her campaign in a general election against Donald Trump.

What Sanders is banking on is convincing Superdelegates that he is the safest choice against Trump, and a win in California could go a long way in that convincing.

In polls leading up to the decisive state primary, Sanders has gained big ground, though he still remains behind Clinton in most surveys. The addition of the 1.5 million new voters is bound to throw off polls like this a good bit, so at this point California is anyone’s game.

The California primary will be held on June 7.