Knock By Knock, Campaigns Push N.H. To Vote     Iowa and New
Hampshire among the handful of battleground states expected to
decide the presidency. Both are places where voter participation
is usually high, and the Obama and Romney campaigns are working
hard this weekend to drive that turnout higher. In a minute,
we'll hear from Iowa Public Radio's Sarah McCammon on the GOP's
get out the vote efforts.  But first, Josh Rogers, of New
Hampshire Public Radio, takes a look at Democratic efforts in
the Granite State.   JOSH ROGERS, BYLINE: By 10 A.M. yesterday,
a union hall on Concord's east side was full of Obama volunteers
and filled by the fast talking voice of 22-year-old field
organizer Steven Kidder.  STEVEN KIDDER: We intend to make eight
passes through Concord between now and Election Day. So we want
to make sure we talk to as many people as possible, and nag them
and shame them into voting on November 6th.  ROGERS: Kidder's
mention of shaming was no accident. In the waning hours of this
race, the Obama cam