Good, they should be worried. My congressman is a good guy but if he weren't, I'd sure try to get him beat in the primary.
Primaries are notoriously low-voter turnout so if that voting base changes, incumbents had better look out.
My guys are "good guys" per se'
but they are not fighters for what is right... and what we want....
if nothing else... I think the strong turnout and the big numbers for the challengers will at least wake them up...