CNN TV Politics uses Twitter

Last night I was watching CNN's Rick Sanchez on TV and saw that his show was using a CNN twitter profile to collect real time feedback from its viewers. Apparently Twitter is an important tool for political pundits and campaign managers. Here is a list of politically relevant Twitter accounts that I was able to find:

• CNN's Rick Sanchez: http://twitter.com/ricksanchezcnn
  
• CNN's Political Ticker: http://twitter.com/politicalticker
  
• CNN's Don Lemon: http://twitter.com/donlemoncnn
• Barack Obama: http://twitter.com/BarackObama
• The NewsHour with Jim Lehrer: http://twitter.com/newshour
• FoxNews: http://twitter.com/foxnews
• MSNBC: http://twitter.com/msnbc
  

I believe the aforementioned Twitter profiles are legitimate but I am not 100% sure how to know which of these are real and which are fake because Twitter users can upload any picture and list any web site on their Twitter profile and, thus, could pretend to be anybody. Thus, you can only trust Twitter accounts linked to from trusted web sites.

Do you know if the John McCain campaign has an official twitter profile?