James:

After years of failing to comes to terms of having a message that only resonates to the angry white male in this country, the republicans must, instead of excepting blame for their losses, come up with an excuse for said failure, therefore the results must be rigged.

 Validity and truth are secondary, much like the commentary on these sites.
Blaming others and refusing to except that the party itself might need a direction change is much easier, and far more likely to be followed, by the party faithful.