Respectful answers, could Sarah Palin have ever become President succeeding John McCain had McCain won 2008?

OR had a hypothetical President John McCain resigned before an alternate future 2012/2016 election? I'm quite a fan of my nostalgic memories of the 2008 Sarah Palin run for VP as a foreign politics news thing at the time - I didn't mind too much when Obama won instead and reelected 2012. I did hope Palin would run/win in 2012 in her own right as President ah well.
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Respectful answers, could Sarah Palin have ever become President succeeding John McCain had McCain won 2008?
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