http://www.nysun.com/opinion/giulianis-startling-departure-on-civil-unions/53313/
On a February 2004 edition of Fox News's "The O'Reilly Factor," Mr. Giuliani told Bill O'Reilly, when asked if he supported gay marriage, "I'm in favor of … civil unions."
http://www.thetaskforce.org/TF_in_news/07_0909/stories/1_Giuliani_Retreated_GayIssues.pdf
In April, Giuliani's campaign told the New York Sun that a civil unions bill passed by the New Hampshire legislature "goes too far" because it is "the equivalent of marriage."
http://www.nypost.com/seven/04202009/news/columnists/rudy_rips_govs_bid_for_gay_nups_165238.htm
RUDY GIULIANI is declaring war on gay marriage — vowing to use his strong opposition of it against the Democrats if he runs for governor next year.
http://www.nydailynews.com/blogs/dailypolitics/2009/04/rudy-positive-vision-not-gay-m.html
Rudy: 'Positive Vision,' Not Gay Marriage, Will Win NY For GOP
Giuliani insisted his position on gay marriage has not changed. He said he has always believed in some form of civil union or domestic partnership for same-sex couples, but thinks marriage is "between a man and a woman and it should remain that way."
The former mayor didn't exactly sound like he was waging war on gay marriage, saying he thinks the GOP should let a grassroots movement in opposition to Paterson's bill develop on its own.