Trouble From All Over: Sen. Charles H. Percy (R-Ill.) already has a primary opponent, Rep. Tom Corcoran (R-Ill.), in his reelection campaign next year, and probably will face a strong general election challenge from Rep. Paul Simon (D-Ill.). He has a couple of other worries as well.

One is the national Pro-Life Political Action Committee, an anti-abortion organization that has made Percy's defeat its "top priority for 1984." To this end, it has sent anti-Percy packets to 6,000 anti-abortion activists in Illinois and is preparing a fund-raising mailing to 15,000.

Another is that of Israeli supporters who raised money to help Democratic Rep. Richard J. Durbin defeat Republican Paul Findley last year. They have sent out fund-raising mailings denouncing Percy, chairman of the Senate Foreign Relations Committee, as a "dangerous man" who led the fight for the sale of F15 fighters and airborne warning and control system (AWACS) equipment to Saudi Arabia and "almost single-handedly blocked the shipment of 75 F16 aircraft" to Israel.

"More than any other officeholder in Washington, Percy has worked to destroy the special relationship between the United States and Israel, a relationship that is Israel's lifeline, and of great consequence to U.S. security," a fund-raising letter informs recipients.