Michael Bloomberg has not said that he is running for president. However, the Virginia Independent Green Party (which is not affiliated with any national party) is already circulating a petition with Bloomberg listed as its presidential candidate. Virginia permits stand-ins. The vice-presidential candidate listed on the petition is Gail Parker, but if Bloomberg were to run and make use of that petition, Parker would be free to withdraw, and Bloomberg could substitute his actual running mate, later in the year.
The petition already has 300 signatures. 10,000 are required, due in August 2008.