Moscow is a huge city (12 mln population). I don't think that different results in different parts of it give you any reason to call elections "DEFINITELY rigged", if you look at New York state (which has similar population size as Moscow) elections for 2012 [1], you will also see that each county has a pretty different kind of results, some counties were in full support of Obama, and some were in support of Romney, but that does not make it "definitely rigged" no?

[1] - https://en.wikipedia.org/wiki/United_States_presidential_ele...