I said conservative Christians... Not just conservative. And no where did I say Republican even once. A conservative doesn't have to be a Christian hence your lower number... and conservatives don't have to be republicans. Right we have many more progressives then liberals or conservatives in the government... But not among the people.
1. We've got a language issue here. The expression "conservative Christian" is ambiguous and may refer either to conservatives who are Christian, or Christians who adhere to a conservative interpretation of their religion. If you mean the former -- as I thought you did originally -- then you are wrong because, well, only 40% of the country identifies as conservative at all, so it can't be the case that 70% identify as conservative + Christian.
2. Now, if by 'conservative Christian' you mean "Christian who adheres to conservative interpretation of religion," then your post is even more incoherent, and there is more data indicating you completely made up the 70% claim.
3. You didn't explicitly mention Republicans but you implied that conservatives vote Republican when you said something to the effect that since 70% of Americans would identify as conservative Christians, the poll results (which indicate significantly more votes for Romney than Obama) aren't surprising at all. This statement only makes sense if you assume conservative Christians vote Republican, which as I pointed out in my previous post is only partially true.