He was more restrained on Twitter, tweeting a photo of himself signing up to run again and saying simply, "Just filed my paperwork for the 2014 election. Vote on October 27th."
The conservative mayor of Canada's largest city has said he would run again, even after the revelations last year about his drug use pushed him into the international media spotlight.
Ford has faced intense pressure to resign over that and other erratic behavior that has embarrassed many Canadians.
The Toronto City Council has stripped Ford of most of his powers, but he continues to receive support from some in the city's more conservative suburbs. He first won as mayor by promising to "stop the gravy train" of government spending.
Reactions were swift but mixed Thursday after Ford signed up to run again.
"That pathetic excuse for a mayor should get the hell out and stop embarrassing this beautiful city," said Inna Evtoushenko, 36, a Toronto resident.
Derek Killins disagreed. "Other than embarrass the hell out of himself and the city as a public figure, has he done anything pertaining to his job that was detrimental to the city's well-being from a financial or economical standpoint?" the resident of neighboring Waterloo said. "Most people I ask say that he's done a good job for the city otherwise."
Ford admitted his drug use after Toronto police announced in October they had obtained a copy of a video of him appearing to smoke from a crack pipe. News reports of the video first emerged in May, but Ford at first denied its existence.
Court documents released last month detail police wiretaps of alleged gang members who spoke about delivering drugs to the mayor and having pictures of him using drugs.
The wiretaps are evidence in the case against Ford's friend Alexander Lisi, who faces trial on drug and extortion charges. The mayor has not been charged.
In the weeks since the revelations, Ford has said he has quit drinking and adopted a healthier lifestyle.
"It's too early to tell about Ford's chances," said University of Toronto political science professor Nelson Wiseman of the upcoming election. "Ford's more immediate challenge is whether the police charge him before the election. If they do, he's toast. If they don't, the outcome depends on the vote split.
"I do not believe Ford will win more than about 25 percent of the vote whoever his opponents are. It is possible, however, to win with under 30 percent, depending on the vote split."
The Toronto police investigation remains active. "There are still some matters that are being investigated and pursued," Police Chief Bill Blair told The Globe and Mail last week.
Other possible candidates for mayor who could pose a strong challenge to Ford include Olivia Chow, a Parliament member and former city councilor who is popular in liberal downtown Toronto, and John Tory, a political activist and popular radio host who was runner-up in the 2003 election for mayor.