Default Kerry image: dour and unsmiling?

Is it just me, or have others noticed that the default image of Kerry in the media is dour and serious… vs. “Bright Smile” Bush? This has been subsciously bugging me for a while, but a spread the other day in the SF Chronicle finally caused me to consciously recognize the phenomenon: on the left page was Mr. Bush, with a huge shit-eating grin on his face, bright, sunny, optimistic, and on the right page was Kerry, with a dour, intent look on his face.

Thoughts? Could this simply be a product of each campaign’s particular “spin” on the state of the union?

Thomas Leavitt