Vice President Joe Biden and Republican vice presidential
contender Paul Ryan plowed fertile ground in terms of policy and
politics during their debate -- now the question is whether the
presidential candidates can reap what was sown.   Biden tried to
frame the election as a choice between different directions for
the country by contending policies of the Mitt Romney-Ryan
ticket would hurt the middle class and move the nation backward
on social issues, like gay rights and abortion.  In doing so,
Biden helped set up President Barack Obama to further those
arguments during the second presidential debate on Tuesday in
New York, political experts say.  For his part, Ryan was equally
hard-charging and vigorously put forth the ticket's domestic and
foreign policy proposals in exchanges that were at times sharp
and pointed.   Romney is now well-primed to drive that message
home.  A CNN-ORC International poll released after the debate
suggested voters who watched narrowly favored Ryan over Biden by
48%-44%, a statist