what rules must be respected to form a government?

Composing a government is a complicated exercise for the president and the prime minister. A few rules apply. Thus, it is necessary to integrate political heavyweights, as when Jacques Chirac appoints Nicolas Sarkozy Minister of the Interior, although the two men are cold. Same thing in 2014, when Ségolène Royal was appointed Minister of the Environment or in 2017 when Bruno Le Maire was appointed Minister of the Economy.

Parity women-men must be respected, as well as a geographical balance, to allow representatives from all territories. Finally, to make an impression, a few surprises are expected, such as the appointment in 1992 of businessman Bernard Tapie as Minister for the City. During his five-year term, Emmanuel Macron had surprised by appointing Nicolas Porthole at Ecology and Eric Dupont Moretti to Justice.