It is not like you to go by ad-hominem attacks like this.
It really annoys me when people say "It's not like you" as if they know all about me based on a few posts here and there. But this time I admit you're right. I do try to criticize the argument, not the person. However as I said, I am not familiar with the argument and you haven't presented his argument, so all I had was the name of the person to go on. I don't feel that I should be the one to do the research to figure out what the argument is, what his theories are, what his evidence is.
I don't think this is the major part of Poli-sci
Every serious political scientist finds a different area to specialize in and to research, so I'm sure there are some who are studying voter fraud.