Candidate pledges to carry fight to South Carolina
Takes lead in South Carolina polls
Some pledge to support Obama; others favor Romney
Anti-gay candidate compares his views on marriage to Obama's
Move feeds accusations of more 'flip-flopping'
At N.H. debate, GOP candidates tout opposition to gay nuptials
Romney enjoys strong lead, but Santorum rising
USCIS allows Wells, Makk to stay together in country
Romney, Perry support undoing state's law
Minn. lawmaker called for constitutional marriage ban, return to 'Don't Ask'