Ford has a better chance.
Both have closed the gaps quite a bit, but Ford has actually led in a poll, and even the recent ones he has trailed in have showed it very close. While TN is a stronger GOP state than PA is a Dem state, the Bush factor. Also the TN race appears a bit closer at this race. I don't think either of them will wind up winning, but Ford has the better chance.
It all depends on events from this point forward, to be honest. With steadily dropping fuel prices and with Iraq quieting down a bit, I think, to be honest, fortunes may be changing for the Democrats this season. But we'll have to wait and see I suppose.
Iraq isn't exactly quieting down, today was a real bad day over there, and it as come out that while down slightly the amount of killings were not down nearly as much as what was being reported. The military decided to re-classify suicide bombs, car bombs and mortar attacks differnetly and did not include them in the killing stats for August (I have a post on the U.S General Discussion on this). Gas prices have fallen over the past month granted, but they still are quite high and the fall has taken place right during For'ds recent sure.
granted it does depend on how things go from now till election day, however the chances of Bush and the national GOP being viewed anything above not so good in TN, and horrible in NJ are very slim. I think both Corker and Menendez win their respective races, however both have moved into the competitive category. I just think ford has a better chance to win because he ha less things going against him than Kean Jr does. Also Ford is a FAR better speaker, and A FAR better debator than Kean JR is.