Former Charlotte Mayor Richard Vinroot, once the Republican nominee for governor, said Wednesday that he opposes the proposed marriage amendment to the state's constitution.

Also Wednesday, House Speaker Thom Tillis, a Cornelius Republican, reaffirmed his support for the amendment and his belief that voters will pass it on May 8. The amendment would define marriage in the state constitution as between one man and one woman. Same-sex marriage has already been banned in North Carolina by law. In remarks to students on Monday, however, Tillis predicted that the amendment could be repealed within 20 years because young people are generally more supportive of same-sex marriage rights.