The combined overall household rating for Wednesday night’s final presidential debate, in the top 56 local television markets where Nielsen maintains electronic TV meters, was 38.3. 
In comparison, last week’s debate between Senators McCain and Obama — the candidates’ second – received a 42.0 household rating in the top 55 local TV markets.  The candidates’ first debate on September 26 received a 34.7 household rating in the top 55 markets.
Wednesday night’s championship baseball game between the Los Angeles Dodgers and the Philadelphia Phillies — aired by FOX, instead of the debate – may have impacted the …

Despite finger-pointing from both sides, Barack Obama and John McCain’s presidential campaigns have run almost the same number of negative local campaign ads, Nielsen Monitor-Plus reported Thursday.
From June 3, when the primaries ended, through Sept. 7, the most recent reporting period, the McCain campaign ran 76,192 negative ads against Obama.  During the same time period, the Obama campaign placed 75,246 negative commercials against McCain.
Negative advertising by both candidates and the “527” groups that support them has concentrated in the top battleground states, led by Ohio, Michigan, Pennsylvania, and Wisconsin.