CONCORD, Mass. - Democratic presidential candidate John Kerry (news - web sites) took a spill from his bicycle while riding Sunday afternoon but was not injured, a campaign official said. AP Photo Kerry was riding with Secret Service agents through Concord, about 18 miles north of Boston, when his bike hit a patch of sand and he fell, campaign officials said. "He's fine. They took the bike into the bike shop and he went home," said campaign spokesman Michael Meehan. Kerry was in Massachusetts — he has a home in Boston — enjoying a break from the campaign trail. It...