Bigger Government Means Bigger Scandals
Former FEC chair Brad Smith has some good advice for Republicans, although I doubt they will take it:
...use this [Abramoff] scandal to cut the size of government. Go forward and make the case: "This, dear people, is what big government is. It is favors for special interests, unrestrained pork barrell spending, and a government so big you, dear voter, can't begin to keep an eye on all parts of it. It is lobbyists and money and corruption. Lobbyists lobby because government is giving out favors and subsidies, writing exemptions into the tax code, regulating most things you do and claiming the right to regulate everything else. The solution is not more regulation. It is smaller government. Take the power away from the politicians."
Of course, the advice is good for politicians of all stripes, not just Republicans.