Intelligence and a record of success are pluses for a presidential candidate, but traits such as high moral character and where a candidate stands on the liberal to conservative political spectrum are more important to me. Mitt's newly found "conservatism" doesn't fit well with his recent liberal record on 2nd Amendment rights, bogus homosexual "rights", and right to life issues. I will reluctantly vote for him if he's the GOP nominee, but I won't vote for him in the primary. If he should then win the Presidency in the general election (very doubtful) I don't have any favorable expectations for his administration.
Romney's personal life, business career and Government service have been exemplary as far as moral character is concerned. There is nary a hint of scandal or taint. Romney is criticized for his liberal/conservative stances, but that is not to be confounded with moral character.