The forthcoming US presidential election promises to be the closest since the race between George W Bush and Al Gore in 2000.
And Barack Obama could yet join the list of underwhelming one-term presidents.
HARDtalk's Stephen Sackur speaks to Bob Shrum, who has advised previous Democratic presidential campaigns, and asks why is President Obama is struggling to rekindle the enthusiasm he generated four years ago?
You can watch the full interview on BBC World News on Thursday 1 November at 04:30, 09:30, 15:30 and 20:30 GMT and on the BBC News Channel at 00:30 GMT and 04:30 GMT on Friday November 2.
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