You've heard the line about progressive politicians: "If they didn't have double standards, they'd have no standards at all". (Maybe this applies to all successful politicians.)
Dissent was the highest form of patriotism, and then it wasn't and now it is again. A supermajority was needed to pass important bills until Obamacare when a majority of 1 was enough. Now a supermajority is back for Democrats. Filibuster was good until the Democrats got the upper hand, when it became bad. Now it's good again. The electoral college was good until it didn't favour Democrats and then it was bad. Fearing Russia's power was foolish '80s policy but the danger of Russia is now obvious to every Democrat in Christendom. Texas secession was for crazed rednecks but now it's favoured by one third of enlightened Californians.
The one standard that never changes when Democrats are in power or out of power is the claim there's no problem with vote integrity. That tells me that leaving an unexamined and undisciplined voter policy in place is a bedrock value. Voter integrity doesn't affect their sojourn in Washington but it must play a big role at the margins for getting Democrats there in the first place.
Some painful background on the voting swamp: Read the excerpt from Fitton of Justice Watch's book.
You get a pdf download of a chapter that is worth reading.