Read Hawley's statement carefully -- he's not saying he'll ultimately vote against certification of any state's results, just that he'll support a motion to object in order to initiate debate over "critical issues." It's procedurally possible to object, and still vote to certify
They lose favor with the party hacks, which means no appointments and potential primary challenges. If the establishment GOP retains its power - and Trump as yet has not made moves sufficient to unseat it - it's a social death sentence in DC.