(CNN) With primaries completed and few races left to call, an historic number of women will appear on general election ballots in congressional and Senate races. Their chances vary, with many women running in toss-up races and a large number running in districts where they aren't likely to win. A total of 256 women have qualified for the November ballot in House or Senate races so far -- 197 Democrats and 59 Republican candidates, according to an analysis of election results. There are 234 women running for the House and 22 for the Senate. Here is a look at where women have won primaries and their potential chances of victory using CNN's Key Race ratings.

Source: CNN September 16, 2018 12:00 UTC