Haley Barbour brought in Jim Dyke as a communications adviser and James Richardson as an online communications aide to Haley's PAC. Dyke has South Carolina ties and John DiStaso at the Manchester Union-Leader links Richardson to New Hampshire, though he's made the rounds online, with the College Republican National Committee and with the RNC in 2008 and the NRSC in 2010.
Tim Pawlenty meanwhile has either signed Eric Woolson or at the very least gained his support if Pawlenty runs. Regardless of the distinction, this is big simply because Woolson worked with Mike Huckabee in 2008.
Rick Santorum continues to add PAC staff in New Hampshire.
And even though this isn't technically staff, Mitt Romney continues to work Florida for important campaign donors and endorsements. The move could pay dividends in the state during the primary and general election phases of the campaign.