But does he have to say it this way:
Moreover, the behavior of pre-1994 white Southern Democrats, though certainly an interesting subject, doesn’t tell us much about contemporary circumstances, since their behavior was idiosyncratic at the time relative to northern politicians, southern Republicans, and southern African-American Democrats, they largely don’t exist anymore, and insofar as they do exist, they’re a rather different breed from their predecessors.
A semi-colon here or there would really have helped that sentence.
