Here's the gist
There are a number of independent non-party political thinkers who follow national elections such as the Cook Political Report, Larry J. Sabato’s Crystal Ball or 270 To Win. These websites, as well as some Democratic Party sites, tend to organize their congressional district projections into categories Republican or Democratic:
Solid for One Party
Likely for One Party
Leaning for One Party
The 36 districts of the Clean the House program are put together from the “Tossup” races and the “Democratic Leaning” lists of the websites of these various prognosticators.
The 36 districts are on nearly every analyst’s list of those two categories. The only judgment applied was to remove three tossup races where the Democratic candidate is self-funding. One other tossup district is not on the list as the primary has not happened and there is no local district committee to hold the funds as there is for several other districts.
Is the list perfect? No, it is heavily made up of districts held by Republicans who are not running again. It contains Paul Ryan’s Wisconsin District at one extreme and a California district that Hilary Clinton carried where a first termer Republican won in 2016 and is not running again. District polling during the next months might take them off the list. However, none of the experts would argue that these districts are not on the priority list for both major parties and belong on the toss up list.
The following are the 36 districts with their state and district numbers and the names of the candidates. Where a primary is yet to happen the funds are sent to a local district committee that holds the funds for the primary winner.
Donna Shalala (FL-27)