In 2018, 17.3% of all Senate Democrats were defeated according to Ballotpedia
This question asks: What percent of Senate Democrats seeking another term will be defeated in the 2020 elections?
This question will be resolved according to the numbers published on Ballotpedia. If that resource is unavailable, Metaculus can choose a suitable replacement or resolve as ambiguous.
If elections are not held by the end of 2020, this question will be resolved as ambiguous.
This question has the following companion questions covering other congressional houses and parties: