The ratio of negative election coverage toward the candidates in statements from third-party newsmakers (those outside of the campaigns) shows that neither Romney nor Obama had sustained periods of more negative coverage than their competitor. However, it does appear that Romney received more negative coverage than Obama for the majority of the second half of October. From October 26-November 4, negative coverage toward the candidates was extremely dynamic once again.
The ratio of positive coverage toward each candidate was more consistent in October. Obama sustained more positive coverage than Romney for the majority of the month, with the exception of the coverage just prior to Hurricane Sandy, in which Romney briefly received more positive coverage than Obama. However it seems as though Sandy provided a benefit to Obama. From October 29-November 1, the positive coverage ratio was 69% to 31% in favor of Obama.
Taking into account both the ratio of positive coverage and the ratio of negative coverage heading into Election Day, it would appear that Obama had a better final stretch than Romney. Obama had less negative coverage in comparison to Romney toward the end of October, and received a significant boost in positive coverage due to Hurricane Sandy.