Former US Vice-President Joe Biden is strongly signalling he could soon launch a presidential campaign while still giving himself room to decide against a run.
Speaking in Delaware, Biden said: "I haven't made the final decision but don't be surprised."
Biden says his family supports a campaign, which is important because he has long said that would be a major consideration for him.
He added, "There is a consensus that they ... want me to run."
He says he's still deciding whether he can finance a campaign according to his principles, which include banning political action committee money.
