I'm gathering some info on this now, and I don't like what I'm finding so far.
>Massachusetts 8th congressional district, where Wu is running, is based around the southern region of Boston. It is solidly blue, and has not had a republican since 1955. If Wu wins the primary, she is sure to make it into Congress.
>To win the primary, she needs to beat the incumbent, Stephen Lynch. Lynch has been in office since 2001, and is a well-known figure. He comes from the world of unions.
>That being said, he did not have a challenger in the primary in 2016. Nor in 2014. Not in 2012 either. In fact, I'm struggling to find any information on primary challengers he's had.
Now, this is from some quick searching around, but nothing is turning up on any primary challengers Lynch has had before. It seems as if he just walked into his office one day, and no one has ever asked him if he could leave or if they could have it instead. Many years, there wasn't even a challenger to him in the general election. If this is the case, then he is likely very rusty when it comes to campaigning, and has possibly entirely missed the digital revolution that's overtaken campaigns during the last decade.
More digging is necessary.