How will the European Commission triggering Article 7 affect Polish politics?

Last month Poland became the first EU member state to have an Article 7 rule of law procedure launched against it. Aleks Szczerbiak writes that while sanctions appear extremely unlikely, the domestic political impact will depend on whether Poles accept the opposition's argument that the government is isolating Poland internationally, or the ruling party's claim that it is defending national sovereignty against EU interference in the country’s internal affairs.