.@marcorubio making unprecedented bid to keep his GOP delegates for a contested convention https://t.co/MjDdzRC5MB pic.twitter.com/22iJ2Cmt1l— NBC News (@NBCNews) March 30, 2016
.@marcorubio making unprecedented bid to keep his GOP delegates for a contested convention https://t.co/MjDdzRC5MB pic.twitter.com/22iJ2Cmt1l