A common response is to ask is "where does the 10K count come from?"
I did some digging today, the base is a study from:
The Williams Institute
UCLA School of Law
http://www.law.ucla.edu/WilliamsInstitute/publications/CASSMarriageCounts.pdf
Also, some folks have asked, in comments to my post and to other posts...
But the prop doesn't say anything about annulling the existing marriages.
True, the prop only changes a definition, but changing the definition changes the basis of the marriage. It is expected (souce unconfirmed) that the "Yes on 8" support groups would follow with a push for laws and/or lawsuits to invalidate the existing marriages.
"Are not domestic partnerships the same?"
I collected several ideas, but I think I'll just stick was a basic simple one:
"Seperate but Equal" is not was equal rights for all means.