A reliable conservative source tells me that Rudy Giuliani is preparing to sign Americans for Tax Reform's "National Taxpayer Protection Pledge."
So far, several GOP Presidential candidates, including Mitt Romney and Mike Huckabee have signed the pledge.
In the past, Rudy has been criticized for declining to sign the pledge.
Giuliani recently released his first New Hampshire TV ad. Taxes are one of the most important issues in New Hampshire this cycle. As such, signing the pledge -- at this point -- would likely be construed as yet another signal that Giuliani fully intends to campaign hard in the early states of Iowa and New Hampshire.
Note: I have put in requests with Americans for Tax Reform, as well as the Giuliani campaign, and will update you with their responses ...