Earlier quoted context omitted.
I would absolutely sympathize with you, if this were a true story. Believe it or not, I'm not a registered Republican, after all. To be fair, I've never heard of conservative folks overtaking a liberal city, only vice versa. If you have a true story to share, I'd love to hear it. Instead, it feels like you're just reversing everything I said for argument's sake.
Reasonable. It's anecdotal, and no, none have been "taken over". What I'm predominantly responding to is this weird way people seem to look at these liberal cities and go "oh, they've succeeded in spite of their liberalness" instead of those being part of why they became desirable places to live in the first place. The few examples that come the most to mind are what "Keep Venice Weird" is reacting to, and the lament…
Why would you think so? For example California used to be if not a Red State then a heavily leaning Republican: since 1880 until 2000 it has not voted for a Democratic president who has not also won the national election (and the 1880 election was extremely close). In the same time period it voted for a Republican candidate who lost the election multiple times (e.g. it voted against JFK and Carter).
Do you really believe that California had not been desirable before it started voting exclusively D (in 1992 the earliest)? I had not been living in the US at the time but judging by the popular culture it does not seem to be the case.