Robertson has been supporting RG since 2005, no surprise, its a gut thing for him, its his opinion.
So have Sean Hannity and the Weekly Standard. I think these people are betting on the person they perceive as a winner. For like reasons, Paul Weyrich, Bob Jones III, and Glenn Beck have lined up in the Mitt Romney camp. If they were to declare on principle rather than pragmatism, they could support Fred Thompson, Duncan Hunter, Tom Tancredo, or even Ron Paul, all of whom have stronger conservative records, especially on social conservative issues. If this election cycle goes as past ones do, Hunter and Tancredo will drop out, and maybe McCain as well, following the January primaries if they perform poorly, based on their strained finances. Unless Huckabee and Thompson can pull off early wins, they may be out after Super Tuesday. Ron Paul will go the way of Howard Dean and Pat Buchanan, as his enthusiastic supporters do not translate into mass popularity. Then it will boil down to a Giuliani vs. Romney race.
With a declining dollar, higher energy prices, consumer price increases, and the increasing impact of the Internet vs. the declining influence of the MSM, the 2008 election may differ from what we have seen in the last four Presidential races.