A lot of the rating here would depend on whether or not the issues that played in VA and on Long Island will apply to this very suburban state. Democrats have a structural advantage in CT but if CT suburbanites are more concerned about quality of life issues and not national liberal issues, the race could get interesting. CT may be a test as to whether the shift to the GOP on Long Island was a temporary glitch or the beginning of a greater suburban realignment.
Why just long Island? Democrats did very well in Westchester. They only lost one seat.
Westchester is very different from Long Island; it is less working class and more upper class. It also has more urbanized communities (Mount Vernon, Yonkers, White Plains) than Long Island.
Sooooo... like Connecticut. Most of the state is upper class areas (Fairfield Co., Hartford Suburbs) and Urbanized areas like Bridgeport, Hartford, New Haven, etc. There are WWC areas in the more rural Western & Eastern corners of the state, but they're not nearly as large or influential as Long Island's WWC communities.