a "Ritual of Passage" between the two fields probably we may have, in a French style, a lobby of Freemasons in the Parliament, or a League of Masonic Ministers and past-Ministers. Nothing exists like this, except in the imagination of some folks that after reading Dan Brown very amusing fictions reach the conclusion they know everything about freemasonry.
Freemasons are normally discreet as its their own right to unveil their qualities of Freemasons; although some folks like to make the show for the audience when they discuss masonic topics in public. It is well-known the anecdote of a current politician that confessed to a journalist to be a high-ranking Freemason (of a higher degree) because he received a letter from the Grand Secretary informing him that he was raised. But normally Brothers don't allow themselves to be the joke around the media.
"National Revolution" of 1926. Since the foundation of the Third Republic, there is no such appealing to become a Freemason for the enthusiasts of a successful political career. There are reasons for that: the first, to be pointed out as a Freemason doesn't give any complimentary status; second, (it) exposes the politician to the nation sport , the "cunha"; and thirdly, it may fragilize the candidate to the hostility of those who within their own party dislike Freemasonry . Of course there will be people that believe exactly the opposite. Let them be happy, though.