Where you have a one-party setup, whether de jure or de facto, then no republic can stand. The Uniparty of the Democrats and the GOP-e mimics one-party states precisely, as does the European Union with its pretense of multi-party parliamentary “democracy”—but the EU never pretended to have separation of powers, though.
Any discussion about how “Gridlock is bad” is basically saying that robust discussion and how disagreement is a bad thing is the New Speak of Neo-Tyrants....
If everyone in government agrees it is a bad day when they start discussing ways to take things away from the citizens because they will ALL agree to do so....
It is like how a majority of politicians think amnesty is a great thing, but the majority of the populace disagree.....
If there is no gridlock on the decision to cut the collective citizen’s throats it is soon a tyranny.