Many papers that backed Bush in 2004 are endorsing Obama now:
The Denver Post, which had backed George W. Bush in 2004 and is owned by Republican-leaning William Dean Singleton, this evening endorsed Barack Obama for president. So did the Chicago Sun-Times, Kansas City Star. Southwest News-Herald (Ill.) and the Atlanta Journal-Constitution. And to top it off: another Bush-backing in 2004, The Salt Lake Tribune.
This is 1964 territory.