Ah yes, just like they managed to rally their members with the tax bill, the bill to repeal Obamacare, etc. I, for one, find it funny that a party which controls all branches of government still manages to fail so miserably on all fronts.
Speaking of unreasonable demands, the Republicans could then also have prevented the shutdown by removing their multi-billion dollar demand for their border wall. As a matter of fact, talks about both, between Trump and Schumer/Pelosi had occasionally been promising. However, the president himself didn't even seem to grasp his own party's policy, as any agreements made had to be turned back under Republican criticism. An example would for example also be the temporary extension of the extension that would have prevented this whole shutdown in the first place.