INDIANAPOLIS (AP) _ A veteran of Republican political campaigns is leading the fight against a GOP effort to amend Indiana's constitution to bar same-sex marriage.
 
Megan Robertson describes herself as a conservative but acknowledges that her new role with Freedom Indiana coalition puts her at odds with many in her own party.
 
The 31-year-old Robertson is gay. She says she thinks many Republicans are ready to speak out against a ban. Indiana law already defines marriage as between one man and one woman.
 
Indiana's proposed amendment would bar same-sex marriage and civil unions. Robertson says that would make it one of the nation's most extensive bans.
 
Business leaders say a ban could make it harder for them to attract new economic development.