With the Republican National Convention set to begin next week, followed by the Democratic Convention a week later, digital media are getting ready for their moment in the political spotlight. While the major broadcast networks are sharply limiting their live coverage of the conventions this year, ABC, NBC, CBS and PBS will all be providing gavel-to-gavel coverage via live streaming. YouTube will also be live-streaming the conventions on its new dedicated Elections Hub channel. Meanwhile, Twitter has pre-arranged hashtags for the conventions ready to go (#RNC2012 and #DNC2012) and both parties will employ armies of tweeters, most likely to bombard the other side’s hashtag with a torrent of partisan sniping. And Facebook on Wednesday launched a new app to try to turn voting into a social activity. Let the arguing begin.