So, yes, born-again Christians will vote for a Mormon, and they will do so in heavy numbers in the right situation.
White Catholics: Obama's share of the white Catholic vote slipped from 47 percent to 40 percent over the past four years, representing a drop of 7 points. Obama's share of the white Protestant vote slipped from 34 percent to 30 percent, for a drop of 4 points.
So, yes, Obama's vote among white Catholics fell by more than it did among white Protestants.
It is notable that the two groups in which Romney did well -- white Catholics and white Protestants -- both have declined in size over the past four years. The white Protestant portion of the electorate decreased from 42 percent in 2008 to 39 percent in 2012. The white Catholic portion of the electorate decreased from 19 percent to 18 percent during the same period.
Jewish voters: In 2008, Obama won 78 percent of all Jewish voters. This year, it was 69 percent, a significant 9-point drop. Compare that to Obama's 3-point drop among all Protestants and his 4-point drop among all Catholics and you can see that Obama's support among Jewish voters fell more than it did among other religious groups.
Church attendance: Church attendance is an important variable that relates to voting preference. Let's take a look:
-- In 2008, 43 percent of "weekly" churchgoers voted for Obama compared to 39 percent in 2012, a drop of 4 percent.
-- In 2008, 57 percent of "occasional" churchgoers voted for Obama compared to 55 percent in 2012, a drop of 2 percent.
-- In 2008, 67 percent of "voters" who never go to church voted for Obama compared to 62 percent in 2012, a drop of 5 percent.
By the way, over the past four years, "weekly" church attendance among voters is up 2 points, from a 40 percent to a 42 percent share of the electorate. At the same time, "occasional" church attendance is down 2 points, from 42 percent to 40 percent. The portion of the electorate that "never" goes to church is up by 1 point, from 16 percent to 17 percent.
Faucheux is president of Clarus Research Group, a nonpartisan polling firm. He's also publisher of Lunchtime Poli