Vice President Joe Biden is still very much considering a bid for the White House, people close to Biden say, and will make a final decision at the end of the summer, targeted for September.
The Iowa caucuses are scheduled for early February, meaning Biden would have roughly four months to barnstorm the first-in-the-nation state before the contest turned to New Hampshire.
Front-runner Hillary Clinton has faced a surprisingly tough challenge from democratic socialist Bernie Sanders, who is within striking distance in Iowa despite not being registered as a Democrat and trailing far behind in establishment support. Sanders' surge suggests Clinton could be once again beatable in a Democratic primary.
