Is there any evidence whatsoever that that happened? People voting for stories they haven't read or enjoyed, that is. Because if not, and this is just idle speculation, then it's sort of pointless to discuss it. I mean, we can throw spurious allegations around all day, but unless we have something to back them up with, then that's all they are.
For what it's worth, I think it's entirely wrong to classify ideology as an "outside" factor in literature. Literature has always been political, both implicitly and explicitly, throughout the years. It's not the only factor, and if people were disregarding all other factors in favour of voting along some sort of ideological line then there's a problem, but stories should be judged upon everything that they contain, not just the part of it that has no bearing on political issues.