From his letter to the General Council Chair (scroll down to page 3):
During the last three years I believe that I have done my best to serve these objectives with dedication and conviction. And although today we are closer to our goal, much remains to be done, not only to conclude the Doha Round negotiations, but also to ensure a better functioning of the multilateral trading system. We have seen the Doha negotiations move closer to the finish line; we have seen the Aid For Trade agenda take a prominent place as a necessary complement to trade opening; we have welcomed five new members into the organisation; we have worked to enhance the participation of all members, in particular the poorest, in the activities of the organisation; we have worked to improve the WTO's public image; we have consistently worked to preserve the integrity and legitimacy of the dispute settlement mechanism; we have built new bridges with many other international organisations, starting with the UN family; we have seen the start of the works to refurbish and expand the WTO premises; and last but not least, we have worked to enhance the motivation and professionalism of the secretariat while being mindful of costs for the members. We have seen all of this and much more but it is undeniable that, today, the tasks ahead of us remain challenging, in particular in view of the current world financial turmoil.
All of this, and in particular the Doha Round, will not materialise without a concerted effort by all members, without the capacity to compromise in pursuit of a more open and fairer trading system. For my part, I stand ready to continue to serve the WTO for a second term and to make a contribution to reinforcing multilateralism and development.
Nominations must be received by December 31, 2008. Lamy is clearly a very strong candidate. However, it seems likely that we will see some other good people nominated, in part maybe to lay the groundwork for getting the position some time in the future.
UPDATE: India is "likely" to support him.