I’ve still wondered that since Thad is in debt to the DNC for his win (not the voters, politicians ignore them all the time, he OWES the Rat Machine for turning out the vote)...
...so we have already seen Harry Reid buy off a Senator to maintain Rat control (majority). Would Thad turn to retire seated with the “majority” in his final term?
He is compromised big time. He might as well switch parties if he wins.