ALBANY, March 31 — One is a wisecracking if wandering orator, a silver-haired Korean War veteran and upstate entrepreneur with an acknowledged love of the cameras. The other is a gravel-throated lawyer from the Lower East Side whose voice rarely rises above a low rumble. His eyebrows are one of his most expressive features, undulating as his mouth frowns. The two, Joseph L. Bruno, the 76-year-old Republican Senate majority leader, and Sheldon Silver, 62, the Democratic Assembly speaker, have been clashing behind closed doors for more than a decade. Along with Gov. George E. Pataki, the two men steer the...