Almost every major Jewish group in America, including normally leftist ones, strongly supported the Bolton nomination, largely because of his work to get the infamous U.N. "Zionism is Racism" resolution repealed.
Most Democrats aren't any more anti-Semitic than anyone else IME. Cynthia McKinney and Fritz Hollings are exceptions, not the rule. OTOH, the far left and many Democratic activists are most definitely anti-Semites. They don't generally get elected, though.
Over 40 democrat Senators voted against Bolton.