The only people affected by the partial government shutdown (non-essential services) would never vote Republican, let alone for Trump, anyhow. Republicans cannot lose.
I don't think you can make that statement and not leave out some portion of govt workers who actually do real and important work, like ICE, like Border patrol. I am sure there are a few other good folks (amongst many leeches) who are being asked to sacrifice as a result of this shutdown. For those good workers who are having to deal with this, we should be thankful for their patience. I know a few myself.