30-40% is not a strong majority, they are just overrepresented thanks to a lot of those “safeguards” the founding fathers put in place. 2 senators per state, electoral college, first past the post, the concept of a supermajority needed for many things of note to even get done all mean that 30% of the electorate can hold the majority by the balls if they are rural landowners whose goals align well with obstructionism