A Republican group is taking responsibility for a poll that has roiled the Jewish community by asking sharply negative questions about Senator Barack Obama.

The Republican Jewish Coalition, which is launching a campaign against Obama on behalf of Senator John McCain, sponsored the poll to "understand why Barack Obama continues to have a problem among Jewish voters," the group's executive director, Matt Brooks, told Politico.

The poll asked voters their response to negative statements about Obama, including reported praise for him from a leader of the Palestinian terror group Hamas and a friendship early in his career with a pro-Palestinian university professor. Some Jewish Democrats who received the poll – including a New Republic writer who lives in Michigan – were outraged by the poll, describing it in interviews as "ugly" and disturbing. A group that supports Obama, the Jewish Council for Education and Research even …