The part of Les Républicains who didn't collaborate with Le Pen says the Prime Minister should be chosen from their ranks.
Good luck with that considering their small numbers.
There is also talk of a coalition or agreement between Macron party and Les Républicains.
This could potentially allow Macron party to remain in government.
It would be very risky, though.
A majority of those who had supported the left supported the Macron candidate in the runoff.
They would feel betrayed if the left wasn't allowed to govern.