Treachery Thy Name is Erin Stewart.

The Lady Macbeth of Connecticut Republicans plunged her dagger into running mate Peter Tesei Friday morning. Erin Stewart is running for lieutenant governor. It is the first high profile act of treachery in the hours before Republicans convene for their nominating convention today.

It was only last month that Stewart was highlighting Tesei’s broad experience and perfection her partner in the race to lead Connecticut.

Stewart, a late entry into the race for governor, was running a shambles of a campaign and was likely to fall short of the 15% she needed to qualify for the August primary. The third term New Britain mayor struggled to find answers to substantive questions and was not as particular in keeping fundraising commitments as a candidate needs to be.

A practiced hand at betrayal is a skill that Republicans may not want to reward.