Complex sentence: The campaign staff boosts a negative campaign against Obama's associations with the liberal elite, which Palin supports but McCain resists, and come to accept that Palin is better at memorizing and delivering lines than she is at understanding issues.
Split into simpler sentences: The campaign staff boosts a negative campaign against Obama's past associations with the liberal elite, which Palin supports but McCain resists. The staff also comes to accept that Palin is better at memorizing and delivering lines than she is at understanding issues.