Stealing the Primary

We have a county commissioner and a county sheriff running for judge/executive and the other for county commissioner. It has been brought to light that these two men and their closest supporters have been actively recruiting Democrats to the Republican Party simply to vote for them in the Republican Primary. In fact, we have Facebook posts telling these Democrats that they can just switch back to the Democratic Party late. I need a piece short enough to post on Facebook but long enough to explain why this is such a bad thing. I want them lambasted for their contempt of Republican voters. Kentucky is a closed primary state. What they're doing may be "legal", but it's met with scorn in most states.