Bailey (born c. May 2018)[1] is a pet dog belonging to United States Senator Elizabeth Warren of Massachusetts.

"[3] The couple told CNN in an October 2019 interview that they had long been dog people, and that Bailey helped them keep calm and maintain "the illusion of normalcy".

[4][5] He made several notable appearances on the campaign trail, including crashing a CNN interview in October 2019,[6] appearing in a Fort Dodge, Iowa rally in January 2020, and serving as a surrogate while Warren was attending the Trump impeachment trial.

[7] During the Iowa caucuses, The Des Moines Register credited Bailey as a "natural closer" in its endorsement of Warren.

[8][9] An unofficial Twitter fan account operated by Robert Abare,[2] @FirstDogBailey, had over 30,000 followers in 2020.