Counting that way, 100 percent of the Senate is now using Twitter.
At least three freshman Democratic senators — Sens. Tammy BaldwinTammy BaldwinThe Trail 2016: The campaign that never sleeps Dem senator: 'I am a human being and a superdelegate’ Senate Dems press McConnell, GOP on Supreme Court MORE (Wis.), Martin HeinrichMartin HeinrichCarter pledges probe of sex assault testimony Week ahead: Rival encryption efforts clash on Capitol Hill Encryption commission bill picks up more backers MORE (N.M.) and Heidi HeitkampHeidi Heitkamp oil is changing the world and Washington GOP blocks Obama sanctions czar Overnight Finance: Obama huddles with Yellen; Puerto Rico bill markup Wednesday 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 BluntOvernight Healthcare: Medicare fight looms on Capitol Hill Senate GOP hardening stance against emergency funding for Zika Senate Dems accuse GOP of walking away from Zika deal 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.