Mix of politicians and celebrities had the top tweets for 2015
Plaintiffs say opt-out measure violates Constitution
GOP hopeful says businesses are 'being compelled to sin by government'
Same-sex nuptials have been legal since Oct. 2014
GOP campaign seeks to drop anti-gay language
Dobson says 'We lost the entire culture war' with same-sex marriage
2013 article articulates religious reasons for backing gay nuptials
GOP candidate says 'we're endeavoring' to fight the ruling
Country first to allow gay nuptials through referendum
Move comes days after Rubio won support of pro-LGBT donor