The panel drawing up Idaho's new political boundaries failed to finish by Tuesday's deadline and now faces a lawsuit in state Supreme Court that will likely order them back to Boise.      One commissioner is unlikely to be there: Evan Frasure, the Republican chairman, who said doctors advised him that 92 days of hearings since June have taken such a toll on his health he probably shouldn't continue.  The 60-year-old Frasure had a heart attack four years ago.      The panel's final day saw two commissioners, Republican Lorna Finman and Democrat Julie Kane, strike a deal for northern Idaho legislative districts that other commissioners seemed amenable to.   But differences over splitting up Ada County and Idaho's sparsely populated southeast stymied a final pact.  The six-member panel also didn't agree to congressional district boundaries.