"Political acceptability to the electorate represents the strongest external basis of restraint (of Parliamentary Supremacy)"

Barnett (2020) Constitutional & Administrative Law (13th edition), London: Routledge

Explain what is meant by the doctrine of Parliamentary Supremacy. Consider how Parliamentary Supremacy asserts itself and critically evaluate whether the limitations on the operation of this doctrine are predominantly legal or political. Please focus on the domestic limitations to Parliamentary Supremacy only.

Within your answer, please ensure that you locate and apply at least two authorities from statute or case law from the years 2020 to 2022 in support of your arguments regarding limitations on the operation of the doctrine of Parliamentary Supremacy.

For each authority located, please comment on the legal and/or political impact that authority has had on Parliamentary Supremacy.