We're joined now by NPR's national political correspondent Mara Liasson. Good morning, Mara.
MARA LIASSON, BYLINE: Good morning, Linda.
WERTHEIMER: So, Mara, as we heard, President Obama and Mitt Romney are back on the road again, their conventions behind them. According to national polls, it looks like the Democrats got some momentum from their time in Charlotte.
A marathon around the city of London wraps up the 2012 Paralympics Games today. They're the biggest, best-attended games in the history of the event, which began as an exhibition of World War II veterans, also in London, at the 1948 Olympics. Veterans from recent wars are returning to the competition now to find a very competitive tournament, and one in which the United States seems to be playing catch-up.
NPR's Quil Lawrence has attended the games. He joins us now from outside London. Quil, welcome.