Yes. A marriage equality bill was passed by the California legislature, but vetoed by then Governor Arnold Schwarzenegger twice. He vetoed the bills on September 29, 2005 and October 12, 2007.
Yes, New Jersey Governor Chris Christie vetoed such a bill on February 17, 2012.
Yes. On April 6, 2009, Vermont Governor Jim Douglas vetoed such a bill. The next day, however, the Vermont Senate and House overrode that veto and same-sex marriage is legal in Vermont effective September 1, 2009.
No. The Alabama state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Alabama has ever had the opportunity to sign or veto such a bill.
No. The Alaska state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Alaska has ever had the opportunity to sign or veto such a bill.
No. The Arizona state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Arizona has ever had the opportunity to sign or veto such a bill.
No. The Arkansas state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Arkansas has ever had the opportunity to sign or veto such a bill.
No. The Colorado state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Colorado has ever had the opportunity to sign or veto such a bill.
No. The Florida state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Florida has ever had the opportunity to sign or veto such a bill.
No. The Georgia state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Georgia has ever had the opportunity to sign or veto such a bill.
No. The Hawaiian state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Hawaii has ever had the opportunity to sign or veto such a bill.
No. The Idaho state legislature has never passed a bill that would legalize same-sex marriage and, as a result, no governor of Idaho has ever had the opportunity to sign or veto such a bill.