By Jason Dick and Niels Lesniewski and Ed Pesce and D.A. Banks[jwp-video n="1"]Sen. Tammy Duckworth, D-Ill., made history when she brought her newborn daughter to the Senate floor to cast a vote. Changing the rule to allow that to happen took a Senate vote that set a precedent — and (eventually) a new entry in Riddick's Senate Procedure, the parliamentarian's road map for getting things done correctly.