A few remarks about the UK. Firstly, parliament is not unicameral, because of the House of Lords. However, the Lords has a definitively subordinate position re

A few remarks about the UK. Firstly, parliament is not unicameral, because of the House of Lords. However, the Lords has a definitively subordinate position relative to the Commons, set down in law and procedure; it's used to do largely non-partisan technical work, like originate boring uncontroversial government bills (like the Air Traffic Management and Unmanned Aircraft Bill [1]), and improve bills from the Commons (it's sometimes called "the revising chamber" [2]). They can't block money bills, and they can only delay other bills [3]. So it's not exactly bicameral, either. Sort of sesquicameral. Secondly, it's not clear snap elections are actually helpful, because if you need a majority to call one, they will be only be called when the party with the majority thinks it can win an even bigger majority. They certainly aren't a mechanism for correcting a drift between the government public consensus. They were seen as sufficiently antidemocratic that the UK sort of got rid of them, fixing the term of parliaments [4], but it hasn't entirely worked, because the one time a government wanted a snap election, the opposition agreed to it (and then lost by a small landslide!). Thirdly, the queen doesn't decide deadlocks between the public and parliament. The queen doesn't decide anything - she deterministically follows the advice of her prime minister, because she knows that if she didn't, parliament would finish what Cromwell started. Furthermore the idea of "the public and the parliament [being] in disagreement about whether to call elections" is nonsensical, because that's something that is entirely parliament's decision. Perhaps you think she would take a more active role during a constitutional crisis; i rather doubt that, especially after what happened last time the crown did that [5]. [1] https://services.parliament.uk/Bills/2019-21/airtrafficmanagementandunmannedaircraft.html https://services.parliament.uk/Bills/2019-21/airtrafficmanag... [2] https://publications.parliament.uk/pa/cm201719/cmselect/cmpubadm/662/66204.htm https://publications.parliament.uk/pa/cm201719/cmselect/cmpu... [3] https://en.wikipedia.org/wiki/Parliament_Acts_1911_and_1949 https://en.wikipedia.org/wiki/Parliament_Acts_1911_and_1949 [4] https://en.wikipedia.org/wiki/Fixed-term_Parliaments_Act_2011 https://en.wikipedia.org/wiki/Fixed-term_Parliaments_Act_201... [5] https://en.wikipedia.org/wiki/1975_Australian_constitutional_crisis https://en.wikipedia.org/wiki/1975_Australian_constitutional...