Has anyone noticed the similarity between the high-murder counties and the vote Democrat counties?

Note the Red areas (high murder counties) in the first map match up fairly well with Blue (voted Democrat) counties in the second map. I’m not saying all Democrat voters are murderers, or that murderers all vote Democrat, but there’s a definite correlation. Perhaps the truth is that population densities in urban centres such as New York, Los Angeles, San Francisco and Chicago make people crazy, so they start doing crazy things like murdering people, or voting for Democrats.