The vice presidential search has been conducted among a very small group of Clinton intimates in deep secrecy, even as some aspects were on full and intentional display. Clinton did not conceal her consideration of Sen. Elizabeth Warren, D-Massachusetts, a liberal firebrand who in turn has not disguised the appeal the job holds for her. Still, Democrats close to both women, including some of Warren's own advisers, have said Warren was an unlikely choice from the start.