Just lay my first thoughts here for later rewriting: Cleggy and the Lib Dems may not be as seasoned and resourceful as the Labours and the Tories, but they are still a serious political party, not clueless eejits. For the first half of the film, while the Tories are scheming and the Labours panicking, the Lib Dems look like they should be in a panto but accidentally walked onto this set. Then all of a sudden, Cleggy decided to screw the Labour (ironically, by actually going to bed with the Tories) and specifically the outgoing Prime Minister Gordon Brown (who is a decent bloke, bless him, but incredibly unpopular for no good reason). Hence the tension-packed scence of his meeting with Brown. This scene would have been convincing and very revealing had Clegg been portrayed as a serious politician with a conscience or a goal in the first 45 minutes. Combined with his sudden outburst in front of his party members and his creepy smile at the end of the film, the character of Clegg is completely random and confusing.
I really think the playwright should make up his mind on the tone of the film. And about Clegg. The tone in Death of Stalin was perfectly consistent and harmonious because it was set out to be a farce and a farce it is: there's no proper government running a country involved. But if the screeplay has to include detailed policy issues and struggles such as ditching the fundamental principles of Lib Dem, it should at least MAKE AN EFFORT TO BE SERIOUS THROUGHOUT! As for Clegg, he is a good man shoved into the limelight and then made a huge mistake and got eaten alive first by Tories then by the voters. That doesn't mean he's stupid. Yes he is indecisive. But he certainly doesn't deserve such character assassination, especially when it is not even intentionally done.
The cast of Tories and Labours are generally good; I think they are the watchable part of the film.
For proper reviews:
https://www.telegraph.co.uk/culture/tvandradio/tv-and-radio-reviews/11498941/Coalition-review.html More than one occassion I found Telegraph's reviews quite close to my heart.
https://www.theguardian.com/tv-and-radio/2015/mar/28/coalition-review-the-bloodless-freaks-began-to-swell-with-life-and-humanity This Guardian one is shockingly plain. normally Guardian would do a decent one.
The playwright's play This House about the 1974 Hung Parliament, set mainly in the Chief Whip's office, on the other hand, offered a rather interesting insight into the workings of a minority government. In comparison, this film didn't surpass the previous success.
And just so you know, the Jeremy "GOD" was talking to by the window on the second floor of No.10 towards the end of the film, is Sir Jeremy Heywood, who's currently running the country in spite of Our Lady Theresa May. But that's a story for another time.