They won’t cross party lines. The public elected a Democrat. When someone dies in office, their replacement is from the same party. They will not circumvent the will of the people.
You apparently have no grasp of the law.
This is assuming that Obama is disqualified ...
An election based on the perpetration of a fraud is no election. The remedy is to remove the basis of the fraud (in this case, Obama).
Thus, ALL of his 55+ million votes are thrown out. His electors are disqualified since technically, no one voted for them. McCain’s electors replace Obama’s since he now has the most votes in each state.
McCain’s electors are pledged to him - do you REALLY believe that they would go against that and vote for a different DEM (who, I don’t know - Hillary maybe?). Remember Obama has been disqualifed ...