Electing progressive DAs and attorney general's has a tremendous impact on both the lives of people going through the system as well as the ability to go after corrupt business folks who are fucking over the working class.

Electing left wing mayor's and governor's can also be meaningful as a lot of these folks have unilateral control over an obscene amount of stuff.

This said, campaigning for a single legislative seats is a total waste of time unless the campaign is more about knocking out a committee chairman or something else along those lines.