Kerry and the Democratic party have received the support of an unlikely source: the Communist Party of the United States of America (CPUSA). This is from the cover of the St. Augustine Record, and you can read the full article
here.
The author, after hearing about this, wrote to the CPUSA, and includes further information, such as where Kerry got his "Let America be America Again":
"Next, I discovered that one of Kerry's campaign themes is " Let America be America Again." This slogan was borrowed from a Communist poet, Langston Hughes. This is not common knowledge to the average American."