Studies show that when same sex marriage is legalized and even when it is just practiced, it hurts children. See a study from Denmark on legalization. See Regnerus’ study for just practicing.
While we have no objection to civil unions, calling it marriage, is an affront to Christianity, any other traditional religion I know of, Western traditional culture — and most importantly : the well being of children.
Please check the foregoing article and call your senators.