Charles Stross is comically left-wing in his private writing (his blog). His novels, however, are imaginative, sophisticated deconstructions of received wisdom on both left and right .. and so to 'Singularity Sky'.
I had a notion that this was going to be a black hole story - some orbital plot. But that's just my physics prejudice: the singularity here is that of AI and information transcendence - specifically what happens when post-singularity culture meets a rather nasty stalinist police state head-on.
Leon Trotsky makes a lightly-disguised appearance as the domestic revolutionary leader but the heroes (Martin and Rachel) are Culture-like representatives of future-modernity. As in "Halting State", love soon blooms - I'm beginning to see a pattern here.