All I saw as co-sponsors was one ‘R’ Shays.
Then look again. Deborah Pryce co-sponsored it as well.
Just as one example, the Log Cabin Republicans issued a press release reading in part:
“Unfortunately, too many Americans still face job discrimination because of their sexual orientation–characteristics that have no bearing whatsoever on their ability to effectively perform their job,” said Log Cabin President Patrick Sammon. “Log Cabin thanks Republican Representatives Deborah Pryce and Chris Shays for introducing ENDA.
Source: http://online.logcabin.org/news_views/reading-room-back-up/log-cabin-praises-house.html