In an interview with evangelical leader James Dobson that aired Wednesday, Palin said she thought Republican presidential candidate John McCain would implement the GOP platform if elected — "I do, from the bottom of my heart" — but McCain doesn't support the platform on three issues important to evangelicals: abortion, gay marriage and embryonic stem cell research.

The platform calls for a constitutional ban on gay marriage, an issue McCain says should be left to individual states. Similarly, the platform seeks a constitutional ban on all abortions; again, McCain supports allowing states to decide the question. McCain ...