There are no really useful comparisons when you are dealing with special elections.  Each tends to be its own creature, animated by a very specific, very local set of issues and candidate personalities.

The run-off gives us the opportunity to explore answers to an important question:  how can Democratic candidates win, or even contend, in very Republican CDs?

North County San Diego is a very Republican district.  It would be an amazing thing if Busby can win in June and November.  It will take more than extremely effective GOTV.  It will take a candidate and set of ideas that resonate with what is on those voters' minds.