NEW YORK –- No one will announce they’re running for president on Friday, the first workday in this holiday-shortened week without a campaign kickoff. It was Sen. Bernie Sanders of Vermont on Tuesday, former Sen. Rick Santorum of Pennsylvania on Wednesday, and ex-New York Gov. George Pataki on Thursday. After the announcement-free Friday, the political media circus that already has traveled this week to Burlington, Vermont; Cabot, Pennsylvania; and Exeter, New Hampshire, will arrive Saturday in Baltimore, where former Maryland Gov, Martin O’Malley becomes the second Democratic challenger to Hillary Clinton. Clinton, the Democratic frontrunner, was trailed this week by journalists -- and Republican contender Carly Fiorina -- in South Carolina, where Sen.