Name: Biggest lesson of the Iowa caucuses: Iowa matters
Uploaded: Thu Feb 04 2016 03:24:00 GMT+0000 (UTC)
Duration: 19 min 40 s
Description: Rachel Maddow reviews some of the campaign fallout in the wake of the Iowa caucuses, including new polling, a new feud between Ted Cruz and Ben Carson, lots of new candidate poofing, and a surprising endorsement.

Feb. 4, 201619:40

Biggest lesson from Iowa: Iowa matters