Heidi Przybyla was on Nicole Wallace’s MSNBC show, Deadline White House, and was talking about members of Congress coming forward and admitting that Biden won. She said there is a “question if those coming forward are going to be enough to stem this dam for part of the country.” This appears to be an incongruent conflation (mix of two idioms with opposite meanings) of “stem the tide” (stop the course of a trend or tendency) and “break the dam” (allow information to flow). A big thanks to Bruce Ryan and Frank King for both hearing this one and sending it in.
This one was also heard on the same show, this time from Harris County (Texas) Judge Lina Hidalgo. It is a congruent conflation of “stem the tide” and “flatten the curve”, both meaning to stop the course of a trend or tendency. You can hear this one on the Monday night, July 6, 2020 show. It does not seem that the malaphor curve will ever be stemmed. Another tip of the hat to Frank King for hearing this one.