MSNBC and Fox News don't appear to be covering the same presidential race in the United States.

From the Nov. 1 NYT:

It was a lousy day to be Senator John McCain, Keith Olbermann informed his viewers on MSNBC on Thursday.

Senator Barack Obama’s surge in the polls was so strong he was competitive in Mr. McCain’s home state, Arizona. The everyman hero of Mr. McCain’s campaign, “Joe the Plumber,” failed to make an expected appearance at a morning rally in Defiance, Ohio, and the senator’s efforts to highlight Mr. Obama’s association with a professor tied to the P.L.O. were amounting to nothing.

Wait a minute ... not so fast. Click.

Things were looking up for Mr. McCain, Sean Hannity and Greta Van Susteren told their viewers on Fox News Channel on Thursday. He got a boost at an afternoon rally in Sandusky, Ohio, from none other than Joe the Plumber, who announced his intention to vote for “a real American, John McCain”; he was gaining new ground in ever-tightening polls, despite the overwhelming bias against him in the mainstream news media; and Mr. Obama’s association with a professor sympathetic to the P.L.O. was now at “the center of the election.”

On any given night, there are two distinctly, even extremely, different views of the presidential campaign offered on two of the three big cable news networks, Fox News Channel and MSNBC, a dual reality that is reflected on the Internet as well.

On one, polls that are “tightening” are emphasized over those that are not, and the rest of the news media is portrayed as papering over questions about Mr. Obama’s past associations with people who have purportedly anti-American tendencies that he has not answered. (“I feel like we are talking to the Germans after Hitler comes to power, saying, ‘Oh, well, I didn’t know,’ ” Ann Coulter, the conservative commentator, told Mr. Hannity on Thursday.)

On the other, polls that show tightening are largely ignored, and the race is cast as one between an angry and erratic Mr. McCain, whose desperate, misleading campaign has as low as a 4 percent chance of beating a cool, confident and deserving Democratic nominee in Mr. Obama. (“He’s been a good father, a good citizen, he’s paid attention to his country,” Chris Matthews, the MSNBC host, said Wednesday night in addressing those who might be leaning against Mr. Obama based on race. “Give the guy a break and think about voting for him.”)

And, perhaps unsurprisingly, each campaign is often at war against its television antagonist, just as the networks are at war with each other.

It is a political division of news that harks back to the way American journalism was through the first half of the 20th century, when newspapers had more open political affiliations. But it has never been so apparent in such a clear-cut way on television, a result of market forces and partisan sensibilities that are further chipping away at the post-Watergate pre-eminence of a more dispassionate approach.