Not that it was ever mysterious, but here's proof of the cynical politics behind claims of voter fraud, from another Wisconsin newspaper.
It should be noted that these emails have become public only because they were leaked somehow. The Wisconsin Supreme Court, to which the person in question in these emails was elected in the race in question, ordered them destroyed.
Gee. Anyone shocked? And, in addition to the obvious use of a false premise for political gain, confident they can count on the gullibility of their voters, they mention using talk radio as casually as you use a spoon: it's there, we know what it's for, we use it to feed ourselves.
Once right-wing news sources cover this, letting their listeners and readers know how they manipulate them with lies, the public will finally understand. Right after the sun turns off.