In Thursday's second interview, when it came to the discussion of energy policy, turf the Alaska governor is far more comfortable discussing, many of the differences between she and McCain were exposed.
McCain has said he believes humans are responsible for climate change and that the government should not allow drilling in Arctic National Wildlife Refuge, positions opposite to those of his running mate.
"Do you still believe that global warming is not man-made?" Gibson asked Palin.
"I believe that man's activities certainly can be contributing to the issue of global warming, climate change. Here in Alaska, the only arctic state in our Union, of course, we see the effects of climate change more so than any other area with ice pack melting. Regardless, though, of the reason for climate change, whether it's entirely, wholly caused by man's activities or is part of the cyclical nature of our planet -- the warming and the cooling trends -- regardless of that, John McCain and I agree that we gotta do something about it and we have to make sure that we're doing all we can to cut down on pollution."
In the past, including in an interview with Newsmax.com in August just ahead of her nomination, Palin said: "I'm not one though who would attribute [global warming] to being man-made."
In her interview with Gibson, Palin was much more measured in her response.
McCain and Palin agree on offshore drilling but differ on exploration in ANWR, a federally protected wildlife reserve.
"I'm going to keep working on that one with him. ANWR, of course, is a 2,000 acre swath of land in the middle of about a 20 million acre swath of land -- 2,000 acres that we're asking the feds to unlock so that there can be exploration and development? We'll agree to disagree, but I'm gonna keep pushing that and I think eventually we're all gonna come together on that one."
It might, however, not take too much work to convince McCain to change his mind.
"I continue to examine it," the Arizona senator told The Weekly Standard at the end of August.
The comfort she showed when talking about a proposed pipeline that would supply the lower 48 states with natural gas from Alaska contrasted sharply with her generally rote talking points on national security during the day's first interview with Gibson.
Palin has no previous foreign policy experience and her comments hewed closely to the McCain camp's established foreign policy positions on former Soviet nations joining NATO, and the threats posed from Islamic terrorists and a nuclear Iran.
When asked if Georgia joined NATO whether that would mean that the United States should go to war if the country was again invaded by Russia, Palin responded: "Perhaps so. I mean, that is the agreement when you are a NATO ally, is if another country is attacked, you're going to be expected to be called upon and help."
"And we've got to keep an eye on Russia. For Russia to have exerted such pressure in terms of invading a smaller democratic country, unprovoked, is unacceptable," she said.
Palin -- whose military experience is limited to her gubernatorial role as commander in chief of the Alaska National Guard, an organization with fewer members than there are citizens in the town of which she was mayor -- tried to tout her energy expertise in lieu of her lack of national security policy.