A Romney campaign strategy memo:

The McCain formula for success worked in a divided field when conservatives were fractured, but even a small coalescence of conservatives around Gov. Romney would reveal his support as a coalition too small to win the nomination of the Republican party. Conservatives, self-identified Republicans, and voters who approve of President Bush are likely to be majorities of the electorate in all of the February 5th states. It is therefore easy to see how we defeat McCain in a two-main race by focusing on traditional Republican primary voters.