Vermont Sen. Bernie Sanders raised a massive sum in February -- more than $47 million, according to his campaign's filing Friday with the Federal Election Commission.

And he spent nearly as much: Burning through $45 million -- or more than three times the $13.1 million spent by Biden's camp in February

Despite the heavy spending, Sanders entered March with a substantial financial cushion of nearly $18.7 million in leftover cash, his filings show.

Sanders said this week he still was assessing the state of his campaign after the string of Biden victories had effectively closed his path to the Democratic presidential nomination.