Political obligation has often been characterised as an obligation to obey the laws of the state, but this understanding has been challenged by a number of theorists who have argued that it ought instead to be conceived of as something like an obligation to promote the common good of one's community - something that may, ordinarily, require obedience to the law but that might also require other things and even, in some cases, perhaps breaking the law.
I was just reading a BBC article about the 'pingdemic' - that is, the rising number of people being told to self-isolate. Like a number of other government 'guidelines', it seems that this is not a legal obligation:
So, according to the traditional understanding of political obligation - which focuses only on obeying the laws - complying with this instruction or request would have nothing to do with our political obligations.
However, I suspect that many people think that there would be reasons (not necessarily overriding ones) to isolate and that these would in some sense be political. Certainly, they could be justified by a number of traditional arguments for political obligations, such as a duty of fair play, associative obligations, or Samaritan duties.
Indeed, in this other piece, Mr Scully elaborates:
This looks like a political, if not a legal, obligation - and a useful example for my first-year module later in the year.