It seems like it should help, but in practice, its been useless. You end up having a greater diversity of candidates and parties, but if capital still stands above the political system and controls it, it just means more capitalist puppets, and more advertising money required to get those preferred puppets elected.

Multi-party Bourgeois parliamentarism is not really any different from the ancient roman imperial senate. Its government by oligarchy / the wealthy entrenched class.