If you figure out what that difference is, let me know. The tech scene has been decidedly liberal (old school liberal, nowadays people maybe call that libertarian) and as political as it can be since the start. There has been a trend where other political cultures are getting involved too since ... probably the Obama campaign was when politicians really started noticing that spreading messages through the internet was more effective than going through the corporate news. But that is just a change of affiliations (maybe more accurately a broadening), tech has always been affiliated with someone.
"Political" is anything related to inter-personal power in society, and can be anything from maintaining a homeowner's association bylaws to international spy-craft and assassinations, and is so broad as to be unavoidable in human behaviour.
"Political affiliation" is much narrower and comes with a specific named politician or political party — even if they're not going to get in, such as Lord Buckethead or the Green Party of America.
