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More Republicans are worried the long GOP primary will hurt the party come November.

A Pew Center poll shows 47% of Republicans say the drawn out primary is a good thing, which is down from 55% last month.

Not surprisingly, Mitt Romney's supporters are more likely to lament the long primary, with 52% saying it's bad that it hasn't been decided yet. Rick Santorum and Newt Gingrich's supporters are not so pessimistic.

The poll also shows more voters know Romney is Mormon than Santorum is a Catholic.

The percentage of all registered voters who know that Mitt Romney is Mormon has increased from 48% in November to 58%. A majority of Democratic and Democratic-leaning voters (55%) know Romney’s religion, as do 65% of Republicans and Republican-leaners.

 

Only about three-in-ten voters (29%) can identify Rick Santorum as a Catholic. This includes 32% of Republican and Republican-leaning voters and 27% of Democrats and Democratic-leaners. Another 15% identify Santorum as either Protestant (10%) or volunteer that he is Christian (5%). About half (53%) of voters say they don’t know his religion.

In a follow-up question, about a third of those who identify Santorum as a Christian – 16% of voters overall – say they believe he is an evangelical or born-again Christian.