Everyone wants to know whether Jeb Bush can survive his support for Common Core and comprehensive immigration reform in today's Republican Party. One deal-breaker that might surprise people, though: His opposition to gay marriage. NBC News and Marist College are out with a batch of new 2016 primary polls. And as you might expect, Common Core, immigration reform, belief in man-made climate change and support for raising taxes on the wealthy are among those with the potential to alienate lots of conservatives. But according to the polls, so does opposition to gay marriage--an issue on which Bush agrees with basically...