As you say, this is "left" vs "far left". The 11th is not my district but it's just a few blocks away from my Akron home, so we see lots of signs as we drive around. Ms. Turner has lots of support among the activists but black voters tend to be more conservative that the "Bernie left", so I think Ms. Brown will win in a close one. (The 11th is the only majority black district in the state.)
It will certainly be a low turnout vote....one of the Cleveland precincts in the District had a 10% turnout in the general election last November.