You didn't count the dead people or felons.
When counting Democrats, you must count the dead people and felons who aren't immediately obvious at first glance.
So let's see... each Democrat gets to vote twice, so that's 20,000. Times 2 for the felons... that makes 40,000, plus each of them as at least 2.5 dead relatives... so, yeah. It looks like 100,000 to me.
Also, don't forget to count the absentees. Democrats can't be expected to show up on the day of the protest, so they need "early protesting" and "absentee protesting".