Moderate and reasonable republicans in congress were driven to complete extinction by around 2010. Basically none left that are fiscally conservative or socially moderate, much less both (yes, once upon a time there used to be pro-women's rights and pro-minority rights republicans!)
I agree with the title that Mitt was one of the last honorable republicans left in congress ~ most of the rest have already sold and double-mortgaged their souls, and can't be trusted to keep their word for longer than a single breath between sentences. And they certainly don't care one whit about ever helping or, heaven forbid, actually serving their country.