The Washington Post/ABC News poll includes another bite at the birther apple, asking whether Americans have "suspicions" or "solid evidence." Among all Americans, 68 percent say Obama was definitely born in the United states, while 14 percent speculate about another country and the rest don't know; asked whether it was "your best guess that Obama was born in the United States," the "yes" number rises to 77 percent. So who are the "birthers"? Mostly Republicans and "very" conservative voters. (CHART AT LINK) Thirty-one percent of Republicans doubt Obama's citizenship; the doubters also include 31 percent of tea party movement supporters,...