During his insurgent run for the 2016 Democratic presidential nomination, Sen. Bernie Sanders (I-Vt.) built one of the most valuable tools in all of politics: his list of donors.

That list represents a veritable gold mine. It helped Sanders smash online fundraising records and build a grassroots donation structure that nearly propelled him to the presidency.

The fact that many of the names on the list arent traditional Democrats or self-identified Democrats at all makes it all the more valuable.

And yet, since he dropped out of the primary, Sanders has steadfastly refused to hand over his list to the Democratic Party , much to the chagrin of those who say it could be crucial to help build opposition to Donald Trumps presidency.

On this episode of the Candidate Confessional podcast, the team directly responsible for building that list argues it wouldnt particularly make a difference even if Sanders gave it to the Democratic National Committee.