Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

.@SenatorLeahy on Hillary Clinton's 2016 campaign: 'If she'd like my support, she will have it." https://t.co/TRg7DOO4rM — Andrea Mitchell (@mitchellreports) April 15, 2015

Sen. Pat Leahy (D-VT) said he endorsed Hillary Clinton’s presidential bid on “Andrea Mitchell Reports,” making him the 28th out of 44 sitting Democratic senators (64%) to have endorsed the former secretary of state, according to a survey by The Hill newspaper.

The Hill also notes that 60 out of 188 Democratic House members have backed her (32%).

To put these numbers into perspective, by early 2008, Hillary Clinton’s first presidential campaign had won endorsements from 10 sitting Dem senators, 67 House members, and eight governors.

Political scientists believe that endorsements by elected officials are the best predictor whether there will be a competitive presidential primary or not.