Bloomberg dropped out of the race on March 4, a little more than 3 months after he launched his campaign and one day after his dismal Super Tuesday performance, where he won only the U.S. territory American Samoa. After already putting in $935 million into his campaign as of February 29, Bloomberg poured in another $112.3 million in March. His campaign spent, in total, $1.05 billion, the latest filings show.

布隆伯格是在3月4日退出竞选的。3月4日，也就是布隆伯格开始竞选活动的3个多月后，也就是他在超级星期二比赛中表现不佳的一天后，布隆伯格宣布退出竞选。布隆伯格在超级星期二比赛中只赢得了美国领土美属萨摩亚。截至2月29日，布隆伯格已经投入了9.35亿美元竞选资金，但在3月份，他又投入了1.223亿美元。最新的文件显示，他的竞选活动总共花费了10.5亿美元。