There are now no more official debates before Democrats begin voting.
Tuesday night's debate was the last before the Iowa caucuses on Feb. 3, and it featured six of the 12 remaining candidates — the top four of whom polls show to be neck and neck.
Democratic primary voters got a substantive debate in which the candidates clashed over what it means to be commander in chief, gender politics and, of course, health care.
Here are four takeaways from Tuesday night's debate: