them the hope is they will turn out to vote and maybe the numbers will change. and maybe those voters forget about this change called obamacare which has proven to be so unpopular. ed and michael, thank you both. south korea is raising concerns that the north maybe preparing to carry out another nuclear test days before the president visit. john hunt has more. reporter: the south korea minsistry is saying they have deducted activity that is similar to the preparations carried out before the last test in february of 2013. among the concerns is the placement of a large screen at the tunnel entrance of the site.