Two Senate hopefuls knocked the GOP nominee.
The Dem Senate candidate is facing a workplace retaliation lawsuit.
Supporters of the Vermont senator confronted Reid at a delegate meeting Thursday.
"Clearly I would want to appoint someone who would run again in '18."
Grayson is under fire for alleged domestic abuse against his ex-wife.
Rafael Bernal 07/27/16 11:49 AM EDT
"The day she gets in, which hopefully will never happen, she will approve TPP."
Grayson has been accused of domestic violence by his ex-wife.
This is the GOP senator's second key labor union endorsement in two days.
Democracy for America and the PCCC said they will no longer back his Senate run.