There's nothing wrong with your logic. Only with your assumption that sheer necessity will make the Democrats change. The civics book assumption is that all parties exist for the purpose of winning the next election. But, if that were true, the Democrats would never have nominated McGovern, Dukakis, and Carter (the second time). But they did, and lost ignominiously.
Internal dynamics sometimes cause parties to run off a cliff, even when some of the cows see it coming and bleat in advance. In addition to this defect, the other is the Clinton factor. At present, Clinton (her) owns the Democrat Party and its nomination. Revelations that Clinton (him) deliberately squashed investigations that might have prevented 9/11 will also savage her. So, as long as she's in control, the lies must and will continue.
When and if the Democrats dumb and denounce both of the Clintons, your scenario might work out. Until then, it is logical but will not happen.
Congressman Billybob
Without hyperbole or facetiousness, I express my desire that those staffers who are working with Rep. Weldon be placed under protective custody. I'm gravely serious.
Weldon has too much light on him, so he's fairly safe for now.