"Libs keep moving in and trying to change things!!" What does this even mean? [View all]

I recently moved to a rural area, my life's dream. I was raised on a big farm in the country and am no stranger to country life. However, I had a career in IT and had to live near big cities for my work. I always tried to at least have an acre or so for a garden, chickens, etc., so I've never been an actual "big city" person, even if I drove there for work.

Now I'm really out here in the country and not near a big city and am loving my little country place. But I keep hearing people talk about how the city folks move here and change everything by voting blue. I wouldn't vote red if someone put a gun to my head, but I'm not about to start changing everything around here. What do they even mean by that?

Can someone clarify for me the issues that are on these people's minds? In what way does a liberal moving to the country affect their country neighbors? Or are they just angry that you're going to make their precinct or county blue for national elections?