While dating a lawyer or dating an attorney does have its issues, there are good reasons why dating lawyers offers many strong advantages. (lawyersdating.com)
One strong advantage of these systems is that each driving wheel can be controlled separately. (articles.orlandosentinel.com)
This isn't necessarily an explanation, but incumbents generally have a very strong advantage over challengers regardless of party affiliation unless they've really botched things in such a way that a challenger can run effective attack ads. (politics.stackexchange.com)