Al Queada has a long standing practice of actions and attacks intended to influence US elections going back to the USS Cole attack. These actions have always been intended to help the republicans and the probable effect of a successful attack on synagogues would have been to help the republicans. NOTICE: Do not assume any connection between republicans and Al Queada. Historically Al Queada is the descendent of Ronald Reagan's Freedom fighters but all connection with the USA was severed by G.H.W. Bush in 1989. It appears that republicans tend to take actions which help Al Queada and democrats such as Bill Clinton pursue policies detrimental to Al Queada. There is no connection between the republican party and Al Queada.
Death toll from car bombs in Iraq rises to 56 (AP)
from the article: Yemen arrests woman over parcel bombs sent to U.S. synagogues