A Tuesday broadcast and the nerve-rattling Wall Street freefall added up to a larger crowd watching the contentious second debate between presidential candidates John McCain and Barack Obama than had watched the first, according to early results from Nielsen and some of the participating networks. More than 42 percent of local households watched the second presidential debate, according to stats from Nielsen Media, based on the country's top 55 local TV . That's many more households than the 35 percent that tuned in to the first debate in those markets. Nielsen ... (more)