CBS News turned to GfK’s KnowledgePanel® for immediate reaction to all four 2012 presidential, vice presidential debates

NEW YORK--(BUSINESS WIRE)-- A GfK “instant poll” conducted for CBS News just after last night’s presidential debate showed that 53% of uncommitted voters believed President Obama had won the debate, compared to 23% for Governor Mitt Romney, and 24% who said they believed it was a tie.