The Washington Post suspects something:
The remaining candidates in the winnowed Republican presidential field are attacking one another with abandon, each day bringing fresh headlines of accusations and outrage.
But Mitt Romney and Ron Paul haven’t laid a hand on each other.
They never do. . . .
The Romney-Paul alliance is more than a curious connection. It is a strategic partnership: for Paul, an opportunity to gain a seat at the table if his long-shot bid for the presidency fails; for Romney, a chance to gain support from one of the most vibrant subgroups within the Republican Party.
WaPo points out that the Paul activists are strategically getting themselves elected as party leaders and convention delegates:
To ensure that they are heard — not just now but after Election Day, too — Paul and his followers are working to gain a permanent foothold in the Republican Party nationwide. One state at a time, Paul’s supporters are seating themselves at county committee meetings, and standing for election as state officers and convention delegates, to make sure their candidate’s libertarian vision is taken into account. The goal is a lasting voice for an army of outsiders that has long felt ignored and sees the nation headed toward ruin if things don’t change.