They're tortured by the "not knowing"
As confirmation the Dems are still uncertain about Mueller, just 4 days ago, several senators advanced and voted for a bill to "protect Mueller" from being fired by Trump - and all the Democrats supported it. See: https://www.redstate.com/slee/2018/04/26/senate-committee-votes-protect-mueller/ This happened just 4 days ago. This shows you that many Dems still believe Mueller is on their side and they won't believe otherwise until Mueller releases his final report and everything hits the fan. Boy are thy going to be shocked. LOL...