Last night, six states voted in their Democratic primaries, Michigan, Mississippi, Missouri, North Dakota, Washington, and Idaho. Joe Biden won four out of the six states and Bernie Sanders won North Dakota, and Washington remains too close to call. The delegate count is still relatively close at 846 – 684 in favor of Biden. The race is far from over, with the Democratic candidate needing 1,991 delegates to win the primary.

To win the primary, Sanders needs to outperform his best performance in 2016 and claim 56 percent of the remaining delegates available whereas Biden needs to secure 49 percent of the remaining delegates. But according to Politico, Biden is projected to win in Florida and Georgia, the next two big states holding their primaries next week and the week following.

With the big losses for Sanders, and the upcoming primaries seeming like they will swing to Biden, the race could fall through Sanders' hands in only a few weeks.

Although nothing is certain — especially with a looming one on one debate this Sunday — if Sanders were to lose the primary, there is no doubt that his voter base should give their votes to Biden.

1. If you want to beat Trump, the Democrats need to unite

Right now, the race is tight between Biden and Trump. Some polls have Biden losing to Trump. Some others have Biden beating Trump. But they are all too close for comfort.

These polls might not be taking into account if Sanders voters flipped, however. Imagine if those voters did flip to Biden? Trump might not stand a chance.

2. A Sanders platform could be elevated in a Biden presidency given how close this primary has been

Biden has program and policy ideas that are more similar to Sanders' own than to Trump's. Even though Bernie might take some ideas further than others, it would be nice to have a president take what Obama did during his tenure to the next level and really make a positive impact.

3. Sanders voters give Bernie bargaining power to make that happen

Politico wrote that Bernie has a massive fundraising list that has been dubbed "the gold mine." That gives Bernie really strong potential bargaining power.

4. If Trump is re-elected, we can expect even more major rollbacks on the programs Obama started and that Sanders wanted to take to the next level

In his first four years, Trump has rolled back a lot of Obama-era policies and programs. We can be sure that another four years of Trump means another four years of rollbacks on things that really matter for our world and society moving forward.

5. The Democrats need to do what the Republicans did last year

Not just to beat Trump. The Republicans all fell in line with a candidate they maybe didn't fully believe in, policy-wise, but who they believed could take the presidency. And he did. However, if the Democrats ever want to reclaim the presidency, one way or another, they will have to unite under a candidate.

The party is split right now, and a split party has no chance of beating a united party.

6. To save the world

The Green New Deal is a radical idea in the world of the Republicans. But one thing that Democrats agree on is that climate change is real and putting more money into oil, not as a transitional fuel but as a mainstay, is charging us forward to the point of no return.

Even though Biden believes in fracking as a transitional fuel, it is not intended to stay in his presidency.

If Trump wins, that's another four years that our world loses to the money-mongering oil companies and another four years that could've been spent moving us in a different direction.

7. The Supreme Court

The next president will likely get to nominate a replacement for current Supreme Court Justice Ruth Bader Ginsburg and possibly Stephen Breyer as well — both of whom are ideologically more liberal and help preserve relative balance on the court. If Trump wins, he will likely nominate more candidates like Brett Kavanaugh, and with cases involving everything from LGBTQ rights to the legality of the Affordable Care Act coming up before the Supreme Court, Sanders' supporters should understand the importance of Supreme Court nominations when deciding whether to support a Biden candidacy or not.

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Sanders supporters, therefore, mean something greater than just support, they mean the ability to help move our country, and the world, in a direction that doesn't jeopardize it for future generations. We only get one shot at this. If Trump wins, we are basically shooting ourselves in the foot.