(CNN) - A person close to Alaska Gov. Sarah Palin with knowledge of her thinking told CNN Monday that her decision to end her term early "is not part of a grand strategy" to run for president, and that he does not believe she will mount a White House bid - but conceded that, as far as he knows, she has not ruled out the prospect.
Her decision to step down sprang from personal considerations, he said. The combination of family duties and commuting posed a major challenge. "Her life is very difficult," he said. "She cannot spend time with her family."
Another strike against Palin continuing her government service: her mounting legal bills. "Life is not happy for her" right now, he said. Once she decided not to run for re-election, he believes it made perfect sense to step down as soon as possible. The move frees her to raise money for candidates, push causes she cares about, and have the freedom to travel as she pleases.
He's not aware of any single event that served as the immediate catalyst for Palin's decision, but adds that she was underpressure to make a decision whether or not she would seek another term as governor, so others in the state GOP could prepare for the race.