I hate the democrats so they need to be exactly like the Republicans were the past 8 years and obstruct so that they show themselves to be spiteful partisans with no ethics or moral high ground. Then no one new or moderate will want to vote for them.
Behaving that way sure didn't hurt Republicans.
^This.
I don't think they will though, it's against their political philosophy to stall everything out of spite. On an ideological level, Democrats are far more interested in actually trying to make government work while Republicans are more interested in cutting back government responsibilities. Democrats are far more likely to pivot off of tensions between the Trump administration and the GOP-led Congress as their main form of subversion and will make high profile stands only on issues that are of the utmost priority.
Scrupulous partisan power plays ended up being a highly rewarded tactic for the Republicans when they were acting as the opposition party and rallying against grievances the populace had with the Democratic agenda. Democrats could tap the same well so long as they utilize that strategy on issues that Americans have similar grievances with regarding the Republican Party now that they are in charge.