They have many names you won't find in Wikipedia. By the way I have strong desire to rewrite a lot of Wiki's Indian history articles if I have time. But given my schedule I don't know when.
Generally it's just next groupings - cluster of villages, subdistricts, districts (talukas) and so on.
And of course I forget to say you - how people find information  about political parties and their programs - by word mouth, from political activists (party workers), sympathisers and of course press though biased information anyway sifted through lively discussions. It was always amazing to see how Indians are socially active comparing to Russia where civil society is simply in defunct state. When I was working as a social science researcher I started with gathering information through questionnairs and interaction with people. I met maybe thousands people and found how they feel lonely and eagerly telling about their worries to anybody who would listen to them. Long time nobody wanted to listen. And they resigned to their plight. Here everything is different and I believe Indian experience with democracy is exemplary and given rise of Asian giants in futute would be more attention to what is going on here.