[Vigilanteman]

Neat trick. Dividing those who support same-sex marriages with those who support civil unions, then adding them back together to get a super majority.

A more relevant poll would be polling CINO's and practicing Catholics separately.

It also doesn't make sense that Latino Catholics would support same-sex marriages in numbers higher than white Catholics. Didn't actual voting data in California's measure two years ago produce exactly the opposite results?

Another question which ought to be asked and isn't-- How many support gay marriage only because they are tired of the constant whining from the homo lobby and think this will shut them up?

[Seruzawa]

It also doesn't make sense that Latino Catholics would support same-sex marriages in numbers higher than white Catholics.

For me that impeaches the entire poll. It false on the face of it. This is another liberal propaganda activity and the polltakers are apparatchiks.

[ansel12]

A more relevant poll would be polling CINO's and practicing Catholics separately.

Purity and theological perfection testing would be wonderful for all polls, including for Protestants and Jews, and Buddhists, also separating denominations, Episcopalians/Southern Baptists?

The constant rebuttal against measuring the Catholic vote gets tiresome and whiny, it has always been a liberal vote in America.

[Alex Murphy]

A more relevant poll would be polling CINO's and practicing Catholics separately.

You mean like this?

2008 Presidential Election demographics, footnoted and annotated
Your "by the numbers" breakdown of the 2008 vote, with emphasis on the Catholic voter (as of 04/07/09):

55% McCain, 43% Obama - Weekly mass-attending Catholics ^6,9
52% McCain, 47% Obama - White "regular-mass-attending" Catholics¹²
52% McCain, 47% Obama - White Catholic¹⁴
51% McCain, 49% Obama - White Catholics^1,7,11
45% McCain, 54% Obama - Catholics^{1,4,6,8,9,10,11,12}
45% McCain, 54% Obama - Catholic¹⁴
37% McCain, 61% Obama - Non-weekly-mass-attending Catholics^6,12
xx% McCain, 67% Obama - Hispanic Catholics^8,11**,***, ****

** No source provided voting percentages for the other party.
*** Associated Press (citation #11) reports this number as 72%, instead of the 67% other media gave it.
**** Note that some media are reporting the same numbers for the Hispanic and Black vote in general, as well as for those same groups with Catholic or Protestant affiliation.
Citations:
¹ The Awesome Blue God -- How Obama Forged A New Faith Coalition
⁴ Obama's Religious Appeal: Still Missing Evangelicals - which TIME renamed as Obama: Bringing (Some) Evangelicals In
⁶ What's wrong with Catholic voters? What's wrong with Catholics?
⁷ Evangelical Voters Favor McCain by Wide Margins
⁸ Catholic voters heavily favored Obama, analysis shows
⁹ What Happened to the Catholic Vote?
¹⁰ Loyal to the End: Evangelicals Stay the Course
¹¹ Obama results show gains in key religious voters
¹² How the faithful voted
¹⁴ Pew Forum - How The Faithful Voted

All numbers cited above are the earliest ones reported in the press. In cases of multiple reports, some percentages cited were not exact. However, the numbers above are within 2% of all sources cited, lending credence to the general number & placement overall.

Other resources:
With the Help of Catholics…Obama’s Victory
Results! Evangelicals
Mainline Protestants and Latino evangelicals surge toward Obama [pre-election article]
Poll: Latino Protestants switching back to Democrats this election [pre-election article]
The Hispanic Protestant swing vote [pre-election article]
America spoke
Believers in the Pews--and the Polling Booth
McCain Beats Bush on Evangelical Vote