As to evangelicals refusing to vote for Romney, a Mormon, that "they'd vote for the Muslim first" (which is pure crapola) wouldn't hold water, especially after a full page ad was run on behalf of Billy Graham telling believers to vote their faith.
Dr. Richard Land and other faith leaders are either endorsing or encouraging the "silent majority" to carefully consider the candidates that openly stand against all that we are taught in the scriptures, i.e. pro-life, pro-biblical marriage, and against accepting homosexuality as the norm for society.
I pray that Catholic leaders are telling their flock the same, as nothing that Obama stands for is embraced by the Holy Scriptures - and he's proud of it! He is already punishing Catholic institutions (along with Protestant institutions but only Catholic institutions seem to have garnered news stories) by forcing all the faithful to cover not only birth control but RU486 (formerly known as the abortion pill), as well as other abortifacients, which goes against the First Amendment as well as our consciences.
As a church-going Catholic, I have noticed an increase in political messaging at church (against the HHS mandate, for religious liberty), but they are treading pretty carefully. Carefully though it may be, there is some every week, and it is coming from the top of the Church in the US, so it is pretty consistent across the country.