That the Associated Press gives stories about corrupt and scandalous politicians disparate treatment depending on their party affiliation is not exactly breaking news. But it's ordinarily difficult to point to situations involving fairly similar sets of facts occurring at roughly the same time which make the disparity between the wire service's treatment of Republicans and Democrats so obvious.
A largely analogous pair of stories out of Pennsylvania during the past two weeks involves Republican State Senator Jane Orie and former Democratic State Senate leader Robert Mellow. If anything, Mellow's guilty plea to "conspiracy to commit mail fraud and to filing a false income tax return" should be more worthy of national-story treatment by AP because of his former leadership position. But in fact, it appears that the opposite has happened. The story about Orie's conviction is on the national wire, complete with "GOP" in the headline. Mellow's guilty plea is a local story which I did not find at the AP's national site in a search on his name, with no Dem ID in the headline (both have their parties ID'd early in their related stories). Here are the first four paragraphs from Monday night's national story on Orie by Joe Mandak and Kevin Begos: