Gov1: easy, mostly. FPTP and mandates, short-term factors.
Gov2: straightforward. Political protest and power in parties.
Gove3: harder. Unclear in parts. House of Lords for Q1, PM for Q4, but the question threw me; "Discuss the view that we do not have an all-powerful Prime Minister". Discuss usually implies looking at both sides of the argument, but the bold side confused me; I wrote an almost entirely one-sided argument, and hope that's okay.