Since the debacle of 2016, voters have taken every opportunity to vote against Trump and Trump enabling Republicans in state and local elections. The DEGOP has done nothing to distance itself from Trump, so it is entirely reasonable to expect another Blue Wave in Delaware.
And yet, there are only two probably Republican quitters in Delaware. Part of this is because the DEGOP has already been decimated at the polls, but part of it is because Delcollo and Hensley are Teflon. The smear "he is a Republican" doesn't really seem to stick to them.
Probable DEGOP Quitters:
Cathy Cloutier is still leading the pack. The district has shifted under her feet and her brand of 1990's style Michael Castle republicanism doesn't make very much sense anymore.
Mike Ramone is the next most likely to find a sudden desire to spend more time with his family. He knows that he caught a break last time out.
Should be DEGOP Quitters who aren't
If the world made sense, Anthony Delcollo would quit. If Dems field a good candidate he may consider it given the composition of the district.
Similarly, Kevin Hensley should be in trouble but isn't.