The Middle East Media Research Institute (MEMRI) has posted a translation of Grand Ayatollah Ali Sistani's endorsement of the constitutional referendum that will be voted on tomorrow. Sistani is Iraq's most influential Shiite cleric. Terrorists are also not pleased that "two prominent Sunni Arab groups, the Iraqi Islamic Party and the Sunni Endowment" have endorsed the constitution and called on Sunnis to vote "yes" on Saturday.