Republican sponsor defended 'compromise' measure, Ebbin opposed it
Detroit plays host to 31st annual conference
Advocates hoped more GOP support would bolster measures' chances
Key committee approved LGBT measures on Monday
GOP state Sen. Jill Holtzman Vogel early LGBT rights supporter
Measures have bipartisan support
David Nygaard, a former Republican, was elected last November
Measures passed with bipartisan support
Billboards highlight lack of statewide discrimination protections
Majority of the House of Delegates supports pro-LGBT bills