Read all of Zippy Catholic's Measure of Sincerity.
Now that the election is over, the measure of Catholic Obama supporters' sincerity will be how vocally, publicly, unequivocally, and persistently Catholic Obama supporters oppose his vicious and wicked policies. They no longer have any proportionate reason to cooperate with his vicious and wicked policies, because the election is over. Furthermore, the fact that they materially cooperated with his wicked and vicious policies in the first place brings upon them an especially grave obligation to oppose those policies, just as a country which engages in war has a grave obligation to mitigate and repair damages - however unintended - caused by that war.
And it is in this vocal, public, unequivocal, and persistent opposition to Obama's vicious and wicked policies that Catholic Obama supporters can count on the help of social conservatives.