[Ylpertnodi]

Prime-ministers are seleceted by the party in power, and they are selected by a minority of that party when required (Boris losing power - out, Liz losing power - soon out), so they will make as many 180° turns - and returns - as is required by the party that was voted into power so that same party remains in power.

Yes Minister - https://www.youtube.com/watch?v=FLm2X6sFa48