Step One: Isolate your target

Example 1: Bill Clinton is bad.
Example 2: Trent Lott is bad.
Example 3: Tom Delay is bad.

Step Two: Try to muster consensus with independents and honest opposition by assuaging accusations of partisanship by explaining that this particular target is a particularly bad example and not just someone with whom you disagree with on the issues.

Example 1: Bill Clinton is exceptionally dishonest, even for a bad politician, as evidenced by his lying about getting nookie in the Oval Office.
Example 2: Trent Lott is a particularly odious man whose racism cannot be denied in light of his comments at Strom Thurmond's retirement party.
Example 3: Tom Delay is an especially corrupt congressman as evidenced by his indictment and these other accusations.

Step Three: Reverse course from Step Two and frame said person's replacement in same manner.

Example 1: Algore lied about inventing the Internet, ergo he cannot be trusted with the Presidency.
Example 2: Bill Frist is just as bad because he spoke for this one group that shares a mailing list with this other group that has a member in it that belongs to the KKK.
Example 3: Roy Blunt is bad, too, he just hasn't been indicted yet.

Step Four: Use whatever goodwill consensus achieved earlier to score purely political points.

Example 1: Democrats are a bunch of immoral, two-faced, flip-flopping liars, as evidenced by Bill Clinton.
Example 2: Republicans are the party of racism, how else can someone like Trent Lott make his way to a leadership role?
Example 3: Republicans in the House are extraordinarily corrupt, as evidenced by their giving Tom Delay a leadership position.