Summary: there is more to politics than Westminster.
NB I don’t think I’m the only person to think this. But it is not something understood so I will be another. One similar thing I have heard in common speak is “political with a small p”.
‘Politics’ in the Narrow and Broad Senses
Words have many flavours of meanings, and the distinction I will discuss here is between politics in the narrow sense and politics in the broad sense.