What strikes me about these polls - and this one showing only 32% support shutting down the government or declaring a national emergency (with respectively 63 and 65% opposed) and only 36% blaming democrats (vs. 56 Trump/Republicans) is that these numbers are well below Trump's approval rating.
Before the shutdown Trump was at about 42% approval in the agreegate numbers, and this level of support is much lower.
What this shows is that the shutdown is going to hurt Trump's approval ratings, which is what we are seeing.
While the wall (at least in this poll) got 43% approval, Trump's actions regarding that wall are far less popular.
p.s. entire poll (although they did not release Trump's approval at this time) is here: https://poll.qu.edu/national/release-detail?ReleaseID=2592
notably the democratic proposal to re-open the governement gets 63-30 support, and funding boarder security w/o the wall gets 61 to 32 support.