Counting that way, 100 percent of the Senate is now using Twitter.
At least three freshman Democratic senators — Sens. Tammy BaldwinTammy BaldwinSenate panel passes 4.5B defense bill Dem introduces bill to block new government hacking powers The Trail 2016: The campaign that never sleeps MORE (Wis.), Martin HeinrichMartin HeinrichOvernight Energy: Senate Dems block energy, water bill a third time Bison declared national mammal The myth of favorite son and daughter vice presidents MORE (N.M.) and Heidi HeitkampHeidi HeitkampThe Hill's 12:30 Report House Dems urge Senate panel to vote on Ex-Im Bank nominee Senate Dems frustrated over lack of action on Ex-Im Bank nominee MORE (N.D.) — have yet to set up a new Twitter account to suit their new office, but still have a campaign presence with varying degrees of activity.
Blunt also welcomed several new Republican senators to Twitter in a second tweet on Thursday.
Roy BluntRoy BluntSenators hope for deal soon on mental health bill Cruz: VA secretary 'should resign' Overnight Defense: VA chief 'deeply' regrets Disney remark; Senate fight brews over Gitmo MORE (@RoyBlunt) January 17, 2013
The House and Senate leadership have stepped up to promote the accounts of new members. Creating official Twitter accounts for use by their congressional office has become one of the many necessary steps new members take during their first few weeks after taking office.