Updated at 8:37 a.m. ET

It was another big night for Joe Biden.

The former vice president won a set of resounding victories over Vermont Sen. Bernie Sanders Tuesday, most notably in Michigan, which Sanders won four years ago.

The results have now, barring something catastrophic for Biden, put him on a path to being the Democratic nominee and the candidate to take on President Trump in the fall.

To help sort out what happened Tuesday night and what it means going forward, here are six takeaways from the March 10, "Big Tuesday" primaries:

1. Biden's clear path to the nomination

Biden won Michigan, Missouri, Mississippi and Idaho. Washington state was too close to call, and Sanders was projected to win the North Dakota caucuses.

Biden extended his delegate lead to 160, a lead that will be difficult for Sanders to overcome because of the proportional way Democrats allocate their delegates — there are no winner-take-all states — and because many of the upcoming primaries favor Biden.