How do you mean laying low? Watch how they work every issue into their theme of an unconstrained executive branch that has little concern for the most vulnerable (almost a direct quote from Obama on Alito). They are planting election theme seeds but if the past is any guide, the President will have moved the garden when they come to check their crops.
No filibuster. No policy proposals.
Dems are laying low between now and the November elections...save for their regularly scheduled daily cries of "Wolf!" in regards to whatever "scandal" they are trying to sell at the moment.