The news media was bragging about how the Democrats have a large national money advantage. They are going to have to vigorously defend every seat and election. When you have to spend hundreds of thousands of dollars on safe seats, no money advantage is going to be enough.
Anna Little's opponent (a self-financed billionaire candidate with the backing of the Republican Party establishment) outspent her 20-1 in the primary, and Anna beat her. She's got a good ground game, with lots of volunteers.
This one is going to be old-school. Knocking on doors. NJ-6 is right between the NY and Philadelphia media markets. Trying to run a TV-ad based campaign in this district is really, really expensive.