She has waited to see who was running on the Repub ticket. The Dems are busy thinking about who to run against Pirro and/or Cox.
Hillary also has to contend with the Able Danger situation which is up in the air. After all, she's running on Bubba's legacy.
Please note that Howard Dean hinted that there are male candidates who are not willing to step aside. His tone sounded as if he supported one of them rather than Hillary.
It looks like Jamie Gorelick's old legal subordinates at DoD managed to shred Able Danger's files while the nation was embroiled in the 2000 FL recount. That wont be helpful.