I'll be downvoted to hell for saying this, but what you point out is an inconvenient truth. Nearly fifty years of blight and desolation, at what point does the other party get a shot? In places like this the Democrats are just a crooked patronage network.. both the source of and solution to their resident's problems...
Look at Maryland in general, they elected possibly the most moderate and centrist republican in the nation, and is generally respected across the spectrum. I wonder what would happen if one of these types had a term in the mayor's office.
I grew up near Baltimore and go through frequently. It's such a shame that what should be such a historic and interesting is so blighted. There are so many beautiful 19th-20th architectural gems that could provide it with so much character and liveliness, not to mention and proud community