Worcester will get its moment in the sun when the DCU Center plays host to the 2010 Massachusetts Democratic State Convention. The announcement was made Monday morning at the DCU by Lt. Gov. Tim Murray, Congressman Jim McGovern and Democratic State Party Chairman John Walsh. Delegates will have a chance to get a first-hand look at the fourth cheapest metro area in which to live, according to Forbes Magazine. It’s a jump up of 42 spots for the Dems. The 2009 convention was held in Springfield (No. 46 on the list).