Murdoch paid a couple of million to help sponsor the Democrat convention in 2000. He also directly donated to Gore. And he reined in his conservative writers through most of the summer and fall. It was also noticeable that the London Times favored Gore during that period.
After election day there was a noticeable switch. I would attribute all this to the fact that clinton used the regulatory agencies to block Murdoch's satellite plans and access of Fox News to many cable outlets. He must have been threatened that Gore would do the same unless Murdoch backed him.
That news is now old, but since you missed it, here's a Newsmax article which mentions Murdoch's support of gore and the Dem convention, based partly on a Newsweak article:
http://www.newsmax.com/archives/ic/2004/7/12/161017.shtml
The NY Post never, ever came out in favor of Al Gore in the 2000 election.