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True but it does seem the Republicans are more zealous in their party lines rigidity.
Dems have historically broke party ranks more often. Don't count on them to back Biden as Republican senators have backed Trump.
The opportunity here is for the Dems to show what a working government looks like - passing actual bills and delivering meaningful change.
I'm betting very little will actually change though.
At the moment US politics is so divided that most votes are taken straight down party lines. This has been seen regularly over the last couple of years with the SCOTUS votes and impeachment trial.