Yes, prior to Mittens, Weld and Cellucci were elected and Swift completed Cellucci's term. All were "Michael Bloomberg" Republicans. They shrugged, wore the "Republican" label, then winked and nodded as everybody went along with the charade.
Many of us remember failed rino warrior Weld.
Romney rejected, disliked, voted against, (renounced his republican party membership) Reagan, but named William Weld as his political mentor, and the politician that he most identified with.
Romney also despised Senator Jesse Helms, quote “My hope is that, after this election, it will be the moderates of both parties who will control the Senate, not the Jesse Helms”.