I can answer that. I'll even color code:
[1] First off, Party matters when it comes to Republicans because it was your pathetically weak GOP and horribly stupid President that sought to politicize this from the beginning. Republicans get to own those consequences. For example, spending months pretending that this virus is a hoax, then telling idiots to "liberate" themselves from Democrat governors, and opening states with reckless abandonment was just an ignorant political war cry to serve the callous foolishness of one who is already being documented as one of the very worst in American presidential history. Now, with these states rolling back that irresponsible complacency and "full steam ahead" attitude, they expect to be able to declare that we are all in this together without owning that bad behavior? **** that. This is how children learn. In the end, far more Americans will die simply because Republicans and Trump chose to play a game of senselessly defying Democrats over a health issue.
[2] Second, cities are normally Democratic because the populations involve a more diverse crowd than what can be found in 'tater pickin' Idaho. And because cities are far more populated than the rural setting, it makes sense that these locations will be more susceptible to the spread of disease. This is why, throughout history, population-destroying diseases have always found comfort in cities or densely crowded environments such as what the Spanish Flu did to prison camps and military bases during WWI. I guess those were simply "Democratically led?" No, it has nothing to do with being Democrat. If Houston, for example, had a Republican Mayor, Houston would still be in trouble. And considering that Texas was led into this by a fool Republican who was eager to show his loyalty to the idiot in the White House, Houston may even be worse off right now. But isn't it odd how you people can scoff at Democrats for months for listening to health officials and insisting that we open up more responsibility, but now blame the conditions of cities on Democrats? Do you understand how screaming both arguments makes you look? Wasn't (isn't) it the Democrats who insisted on masks and that opening up should be slow and methodical? Now you blame them because their cities are a mess? Since I have shown you this before, you prove that you simply do not care to learn anything that might shatter that radical right-wing inspired ignorance of yours.
[3] The entire narrative throughout the radical right-wing world is how best to avoid how terribly wrong the right has been. You all do this by focusing on the coincidences that cities are normally run by Democrats, while ignoring that cities are natural disease spreaders, so that you can hide from responsibility. From the very far-right to Fox News, this perverted narrative is the same. Isn't it pathetic that when it comes to science, education, fact checking, vegetables, birth certificates, and other such routine aspects of facts and growth that you all consider it a matter of supporting Democrats? What does that make you all? In the meantime, you people cling to conspiracies, debunked lies, defaulting anything uncomfortable to "fake news," and declaring all things that dare penetrate your bubbles as "hoaxes." This is what happens when you all watch your ideologies fail, one after another, over the course of almost two decades, while allowing radical right-wing sources manipulate you into an irrational place of ill-defined rage. You are left believing in nothing and simply defaulting to politicizing everything in order to oppose anything you all have relegated to "the left." I'd think that you people would be tired of always being wrong about everything instead of doubling down in an attempt to hide from it.