Barack Obama has said that he wants to help Democrats win back a majority in the House of Representatives. He says he looks forward to Nancy Pelosi being speaker again.
If he does work hard to elect House Democrats, it will be a change from 2010 and 2012, when he didn't do much at all for them.
But let's say he does. What are the chances of success?
Certainly not zero. Democrats need to gain 17...