Is the McCain campaign screening journalists’ questions during conference calls?

Mother Jones’ David Corn points out today that Sen. John McCain’s (R-AZ) campaign appears to be screening journalists’ questions. Unlike calls conducted by the Obama and Clinton campaigns, the McCain camp seems to choose its questioners, rather than rely on a first-come, first-serve basis. During a recent call, for example, only two questions were taken: from conservative bloggers Ed Morrissey and Matt Lewis. “Had it been merely a coincidence that the only questioners had been rightwing bloggers who had served up soft balls?” Corn asks.