49=. Tom Watson, Politician
Before last July, Watson wasn't widely known outside political circles. His dogged pursuit of News International – before and during the great phone-hacking scandal – has made him one of Labour's few household name backbenchers, and Twitter has played a crucial part in this. The medium has been Watson's weapon of choice for a war of relentless attrition against the Murdoch empire, and relatively little of his output (apart from one rogue tweet by an intern) concerns subject matter beyond the scope of the Leveson Inquiry, the output of the remaining News International titles and the legacy of the scandal.
Tweets as: @tom_watson PeerIndex: 65 Authority: 80 Activity: 76 Audience: 60 Follows: 3,306: Followers: 70,469Follow @tom_watson