Chart shows distribution of percentage of statements made by newsmakers who are on the long list for Romney’s Vice Presidential nominee.  Former presidential candidates Bachmann, Gingrich and Santorum excluded. Time frame is May 1 – August 7.

Chart shows distribution of percentage of statements made by newsmakers who are on the long list for Romney’s Vice Presidential nominee. Former presidential candidates Bachmann, Gingrich and Santorum excluded. Time frame is May 1 – August 7.

Among the long list of contenders for Romney’s VP, Marco Rubio has had the highest VoiceShare over the past three months. However, the media has amplified Rob Portman’s voice to the greatest degree over the past month as it relates to the veepstakes coverage.

In the past three months of election coverage, Marco Rubio has been the most visible VP contender. Over 22% of the statements among the newsmakers on this list have come from Rubio. Paul Ryan, Bob McDonnell and Rob Portman follow at 12.2%, 10.2% and 9.4% of VoiceShare, respectively.

Chart shows distribution of percentage of statements made by newsmakers who are on the long list for Romney’s Vice Presidential nominee.  Former presidential candidates Bachmann, Gingrich and Santorum excluded. Time frame is July 1 – August 7.

Chart shows distribution of percentage of statements made by newsmakers who are on the long list for Romney’s Vice Presidential nominee. Former presidential candidates Bachmann, Gingrich and Santorum excluded. Time frame is July 1 – August 7.

However, when looking at just the past month (since July 1), VoiceShare  looks quite different. Portman tops the list at over 18%, followed closely by Chris Christie and Bob McDonnell at 14.9% and 14.3%. Paul Ryan falls to 6th overall and Rubio slides all the way to 10th with just 1.9%. Rubio received significant  coverage after Obama’s June 15th executive order on immigration, thereby giving Rubio a high VoiceShare when the month of June is included in the data. Since the coverage on immigration has diminished, Rubio has not been as visible in national election coverage.

When looking only content that mentions the phrase “vice president”, Portman’s VoiceShare rises 10%. Almost 30% of the statements among newsmakers on Romney’s VP “long list” have come from Portman in the past month when “vice president” is mentioned.

Chart shows distribution of percentage of statements made by newsmakers who are on the long list for Romney’s Vice Presidential nominee in articles that mention the terms “vice president”.  Former presidential candidates Bachmann, Gingrich and Santorum excluded. Time frame is July 1 – August 7.

Chart shows distribution of percentage of statements made by newsmakers who are on the long list for Romney’s Vice Presidential nominee in articles that mention the terms “vice president”. Former presidential candidates Bachmann, Gingrich and Santorum excluded. Time frame is July 1 – August 7.

It looks as though the media has chosen Portman as the likely GOP Vice Presidential nominee. Although Rubio has had overwhelmingly higher VoiceShare than the rest of the VP field over the past 3 months, his coverage was largely related to immigration, not his potential for being the GOP VP nominee. Among the names on Romney’s VP  list, Portman has had the highest VoiceShare in the past month and the highest VoiceShare in coverage that discusses the GOP Vice Presidential nomination.