A new report out has the Democratic Convention yielding a net loss for the Boston area economy.

The convention, scheduled for the week of July 25, was hailed by Mayor Thomas M. Menino's office as a boon to Boston, reaping millions of dollars in economic gains. But the Beacon Hill Institute determined that transportation and other costs will outweigh the benefits of 35,000 convention delegates and visitors who will converge on Boston's hotels, restaurants, and attractions.

Major portals into the city -- the North Station commuter rail and subway stop and the Leonard P. Zakim Bunker Hill Bridge -- will be closed for all or part of the convention for security reasons. And Sail Boston and the US Olympic gymnastics trials, two major summer events slated for Boston, were moved elsewhere due to logistical problems posed by the convention, planners said. Taking into account these losses, totaling $134.4 million, Boston's economy will lose $12.8 million by staging the convention, an updated study by the institute said.

This shouldn't be a big shock to anyone. They're shutting down a large portion of the public transportation system in Boston. However, in New York they won't shut down the subways or any of the rails for the Republican Convention. Nor should they, even though security should be higher at it considering a sitting President will be there. In the end, this is just another example of the Dems lack of practical knowledge in economics.