But it has been an issue for other candidates in this election cycle, causing headaches for Democratic Sen. Claire McCaskill of Missouri early in the summer when it was disclosed that she had taken a private plane for part of what was billed as an RV tour. Republicans jumped on that admission, with National Republican Senatorial Committee spokesman Bob Salera telling Politico that McCaskill was “too much of an elitist to even stick to a three-day RV tour without hopping on her private plane.”