Bill approved by 61-36 vote margin
Anti-LGBTQ groups have launched conservative effort to block bill
Bill advanced this week with Republican support
Norton calls measure by Utah Sen. Lee āattackā on LGBTQ residents
Final vote could happen as early as Thursday
'Might there be legal challenges to it? I hope not. But in the case that there are, I believe it will be upheld'
First vote on bill expected on Wednesday
Served as transformative leader of Mautner Project
Key vote was expected as soon as next week
Some Republican leaders doubt there's sufficient support