I can tell you one thing for would be an awfully nice gesture - if you're an American Abroad, why not join Democrats Abroad UK? We do events and activities in support of President Obama all year round, and we can help you register and vote and keep you up to date on election news in your state and region.
You might even want to make a little contribution to Democrats Abroad in support of his work.
How about this donating $31.03 in honor of the President's arrival here on our shores on the 31st of March. Go on, you know you want to.