Any good candidate would. However Edwards is "is running for president to build One America" ( http://johnedwards.com/issues) and with an issued that is so likely to divide American, I think it would be a tough issue for him to decide one.
And rightly so. The problems in American are huge. Especially with the buyer of the airport being from the Middle East, the situation becomes even more complex. There are still many Americans today who hold out racial hatred against any people from that region, and I can see already the protests coming from such people about selling over the airport to them. Especially sense the American concern for air security is already so high; I think many problems would come from the selling of the airport.
However, the poll numbers show that 59 percent of people support the idea, and Edwards is a man of the people after all. In theory, it would be best for Edwards to support the idea on the campaign trail. This could work in his favor, as it would bring 59 percent of the public opinion under his belt, and it would work great for his every man image, and his idea of standing up to the old corrupt government as a person of the people. On Edward's own site is a quote about his ideas for the power of public government: ""With his One Democracy Initiative, Edwards has demonstrated that he will take on the dominance of corporate lobbyists to be the leader of something we lack today in Washington: a powerful 'lobby for the public good.' His vision for government reform, like many other issues, is charting a way to reclaim the soul and values of our party and of the country" ( http://johnedwards.com/issues/govt-reform), and his support of this plan would only straighten this platform of his.
Problems further arise with the issue of this plan getting through the House and the Senate. If Edwards supports the plan and upsets his own party to much, he could loose the nomination. If he upsets the other side to much, he could find it very difficult to work with the House and the Senate if and when he becomes President. However, it would look really good to all the people of American if Edwards stood up to the House and the Senate on the platform that a majority of people support this bill, and that he did as well, further rallying his cause as a president for the people.
Running for President, Edward also had to keep in mind the other half of Americans that don't support the idea as well. Maybe it wouldn't be the best bet for Edwards to come out and publicly support this idea, as it could cost him almost 50 percent of the popular vote on the election. And in a crucial election like this, every and any vote counts, and losing that much popular opinion might not work in his favor.
It would be a tough decision for anyone to make, however I believe it would be in Edwards best interest to support the popular opinion and support the plan. This way, he can further build upon his platform as a people's man, and can also stand up to the government, which would really rally the people to his cause. It might upset some people on the other side however, and that is to be taken into consideration, but I feel that it would do more positive for his Presidential campaign that it would do to hurt it. It