Three MI Republicans Vote for ENDA

Yesterday was the historic and controversial vote on ENDA (Employment Non-Discrimination Act). Three Michigan Republican Congresspersons voted YES which was very surprising to me given their past record.
They were: Congressman Joe Knollenberg, Candice Miller, and Thaddeus McCotter.

McCotter and Miller have both been co-sponsors of the Federal Marriage Amendment and Knollenberg used to have a 0% voting record with the Human Rights Campaign.

I am pretty certain that Knollenberg's position on ENDA stems from his current Democratic Challenger Gary Peters, whom many people believe may defeat him next November. Peters is known for being progressive on GLBT issues.