Will the next President be a one termer?

I was thinking no matter who you vote for, the next President will be a one termer. The next President is going to have a hard job ahead of him no doubt. Even if say McCain was to get elected and fire up our economy, then he would have to deal with Peak Oil. If Obama is the man and changes everything he might fix the system (LOL) but we are still in Peak Oil times. So I say 4 years and that's it. What do you think?