(CNN) In an interview with late-night host Seth Meyers, Vermont Sen. Bernie Sanders argued that while his chances of beating former Vice President Joe Biden for the Democratic nomination aren't great that chance still does exist.

"There is a path," Sanders said . "It is admittedly a narrow path."

Which got me to thinking: Just how narrow is Sanders' path?

317 delegates. Let's start with the delegate count as of today. Biden has 1,180 pledged delegates to Sanders' 863, according to CNN's official count . That's a difference ofdelegates.

In the entire primary season, a total of 3,979 delegates will be awarded. CNN's tally has 2,171 delegates who have been awarded so far to all the Democratic candidates. To secure the nomination, a candidate needs 1,991 pledged delegates, meaning -- because, uh, subtraction -- that Biden is 811 delegates away while Sanders is 1,128 away.

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