Mississippi Sen. Roger Wicker is hitting the airwaves to take on the threat of a GOP primary challenge from Chris McDaniel. And the red state senator (who's been endorsed by Donald Trump) is accusing McDaniel of being insufficiently loyal to the president. 

In a new TV ad, Wicker's camp charges that McDaniel "loves the spotlight, but doesn't care much for President Trump." 

A narrator invokes McDaniel's 2016 Facebook posts criticizing some Trump supporters as "delusional" (for attacking McDaniel himself) and "disturbing" (he wrote in 2016 that "Donald Trump is a strong candidate will do well in Mississippi. But the inclination of some of his supporters to promote wild-eyed conspiracy theories and flat out lies is incredibly disturbing.") 

The ad will run for eight days in broadcast markets statewide as well as on FOX, according to the campaign.