The field is already crowded in the race to replace term-limited Tampa Mayor Bob Buckhorn.Retired banker and philanthropist David Straz threw his hat into the ring this week, joining former police chief Jane Castor, council members Harry Cohen and Mike Suarez, former county commissioner Ed Turanchik and small businessman Topher Morrison.Mickey Jacob, an architect and chairman of Tampa Downtown Partnership, had contemplated a run, mulling it over on a recent family trip to Japan.Ultimately, Jacob decided against it."I am exploring a very exciting business opportunity and also (have) accepted a second term as a chair of the Tampa Downtown Partnership. Lots to do and I feel my wife Dianne and I can have effective and valuable impact in the community, continuing to be committed to the organizations and issues that are addressing the challenges we face as a city," Jacobs wrote in a text Wednesday, replying to a query about his potential candidacy from the Tampa Bay Times.Despite six candidates (seven if you count, Michael Hazard, who admitted to voting illegally recently, almost certainly disqualifying him from running for mayor), there is plenty of time for other candidates to jump in the race.Lots of donor money has already been scooped up. Castor's campaign said it and an associated committee have raised about $250,000 so far. Straz said he will spend whatever is necessary to compete.The latest campaign filings will be released Thursday.The qualifying period for the March 2019 election ends in mid-January.