President Barack Obama’s reelection campaign is upping its ground game in Cincinnati, opening its fourth field office in the city on Thursday evening. The new College Hill office will be the source of phone calls and canvassers to the Mount Healthy, Northside, North College Hill and College Hill neighborhoods. The Obama campaign already has field offices in East Walnut Hills, Cheviot and Forest Park. Obama’s Republican rival Mitt Romney’s campaign has three offices: in Kenwood, Westwood and Colerain. Staff contact Kelsey Romanchik said she didn’t know if there were plans to open more. More than 150 people braved the sweltering Cincinnati humidity for the opening of the Obama College Hill field office. They were greeted by a drum line outside of the office, as well as inside a mainstay of any such campaign event — snacks. Keynote speaker City Councilman Cecil Thomas sounded off many of the Obama campaign’s talking points, attacking Romney’s tenure at Bain Capital, his refusal to release further tax returns and Romney’s tax plan, which a recent study by the Tax Policy Center says will raise taxes on the middle class by eliminating popular tax credits. “Why in the world would I vote for someone like that?” asked Thomas.