I did a quick search yesterday after I posted this to see if I could find an example of Republicans running for the hills en masse without result. Yes there may be an isolated (McCain) incident but one does not a (en masse) make.
And darn right, if Republicans were exhibiting this cowardly behavior I'd be for firing everyone of them.
This is about politicians having a sworn duty that they are being paid to do laying down on the job. They aren't being paid to sneak off and hide in a motel while they make their pissy point. They should get in there, blood and gut style, argue their beliefs, stand their ground. If they lose at least they'd do so doing their job, doing what they're being paid to do, representing their constituents.