A lot are already aspiring as early as now. It is only expected that they will be running in 2010. Imagine all the media exposure they're getting as early as now.
I wouldn't mind them running in 2010. But maybe they can prove to the people now that they deserve to the post that they would want to hold in 2010. It's easy to make themselves available to the media but performance should be commensurate with the post they would want to hold.