The investigations could go on for rather a long time, given the strangeness of the events. Here's the way it boils down, I think.
- If Justice Ann Bradley's story is true, David Prosser has to resign.
- If Justice Ann Bradley's story is not true, Ann Bradley has to resign.
- Either way, Scott Walker gets to pick a jurist for the Supreme Court.
The only way this turns out well for the Democrats is if a lengthy investigation comes out as "inconclusive." That's your likely endgame.