When a group of Jewish liberals formed a lobbying and fundraising group called J Street a year ago, they had modest hopes of raising $50,000 for a handful of congressional candidates. Instead, the group’s political arm ended up funneling nearly $600,000 to several dozen Democrats and a handful of Republicans in 2008, making it Washington’s leading pro-Israel PAC, according to Federal Election Commission expenditure records. Organizers say 33 of the group’s 41 favored House and Senate candidates won their races
