Over at NRO, Victor Davis Hanson runs through a list of issues for which Republicans need to articulate some sort of plan—read the entire piece:

Republican politicos will quite accurately lecture that presenting such detailed alternative plans would be foolhardy: The key now is simply to be against what an unpopular Obama is for. I accept that offering detailed solutions might well turn the public as much against the proposed medicine as against the original malignant disease.

Yet at some point, blanket Obama-bashing without a comprehensive alternative will turn stale. Critics of Obama — if they are to be taken seriously — will have to be about more than not being Obama. Instead, conservatives must identify exactly how to undo the Obama agenda — and do so in a way that does not earn them the disdain that the Republican Congress earned between 2001 and 2006, and the Republican administration between 2005 and 2009.

We need some notion of a contracted agenda, so that conservative voters can hold conservative politicians to account in this age of anti-incumbency. Voters wanted closed borders, balanced budgets, ethical members of Congress, and less government between 2001 and 2006. They believed that all of that had been promised — and then were sorely disappointed.

In short, conservative voters want to see something specific — as much to keep their own honest as to defeat the other.