Q asked 6 times RE: Senate vote count [RR]?

https://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=115&session=1&vote=00114

It was 94-6

What is interesting are the Nays. Look at this list of people who voted No for RR. Why?

Blumenthal (D-CT)

Booker (D-NJ)

Cortez Masto (D-NV)

Gillibrand (D-NY)

Harris (D-CA)

Warren (D-MA)