Counting that way, 100 percent of the Senate is now using Twitter.
At least three freshman Democratic senators — Sens. Tammy BaldwinTammy BaldwinThis week: Pelosi's test Dems question FCC on data-free apps 115th Congress will be most racially diverse in history MORE (Wis.), Martin HeinrichMartin HeinrichOvernight Cybersecurity: Last-ditch effort to stop expanded hacking powers fails Intel Dems push for info on Russia and election be declassified Senate Dems push Obama for info on Russian election interference MORE (N.M.) and Heidi HeitkampHeidi HeitkampFeds deny permit for Dakota Access pipeline Priebus says State announcement coming in next 2 weeks Trump flirts with Dems for Cabinet 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 BluntKey Republicans ask Trump to keep on NIH director Overnight Defense: Trump reportedly picking Mattis for Defense chief Dem senator: Petraeus would have ‘real challenge’ on confirmation 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.