
Democratic presidential candidates are frequently absent from their duties in the Senate to be on the campaign trail.
Seven candidates top the list of the most absent senators since the start of the 116th Congress in January. Cory Booker, Kamala Harris, and Bernie Sanders have each missed half of their Senate votes.
Booker, a New Jersey senator, tops the absentee list, missing 52.1% of votes according to Pro Publica. Harris, from California, who implemented an anti-truancy program when she was San Francisco's district attorney, missed 50.5% of votes, and Sanders of Vermont missed 49.8% of votes.
Presidential hopefuls Elizabeth Warren, Kirsten Gillibrand (who dropped out of the race in August), Michael Bennet, and Amy Klobuchar are the next four most absent senators, with missed vote percentages ranging from 37.4% for Warren to 25.2% for Klobuchar.