Romney’s Kevin Madden, via NYTimes.com:

Senator McCain’s signature legslative accomplishment, the McCain-Feingold campaign finance reform bill, is a legislative abomination that we happen to disagree with, along with many other conservatives. The McCain-Kennedy immigration legislation he championed was exactly the wrong approach and only encouraged law-breaking and borders that are less secure. Lastly, Senator McCain’s vote against the Bush tax cuts that helped grow our national economy showed conservatives that he is not a friend of the pro-growth economic policies that put more money back into taxpayer’s pockets. Senator McCain’s joining with Democrats to vote against those tax cuts was bad policy. Governor Romney supports extending those tax cuts.
The status-quo mindset that has gripped Washington and molded those that have been there for so long is in need of fresh ideas and conservative change that can only come from outside of Washington.