English lit A-level courseworkWatch
If you're struggling for what to talk about, have you tried looking for language patterns? I don't know much about political ideology in these novels, but maybe mention repetition of symbolism, hyperbole, that sort of thing? And mention structure and form - is there anything interesting about the way in which the novels are written, i.e. epistolary? Consider the narrative voice. Then link these back to how they show capitalism. It would be best to have a counter-argument, e.g. capitalism is presented as good vs. capitalism is presented as bad. Perhaps you should narrow down your question to either capitalism OR corrupt political ideology, as this will make your essay more sharp and focused.
And, remember, when comparing texts you can look for differences as well as similarities!
Hope this helped a little