"I don’t think we have to lay out a complete agenda, from top to bottom, because then we would have the national mainstream media jumping on every point trying to make that a campaign issue."I suspect GOP challengers to Dem incumbents will be using the same tactic.
It is a potentially powerful tactic: run an anti-Dem campaign.
There's a fairly simple counter-tactic readily available.
All GOP candidates (House & Senate, incumbents and challengers) have campaign websites.
All of these websites include an "issues" page - laying out the candidate's position on what he or she views as the critical issues of the 2010 election.
Use this freely available information!
Design your campaign at least in part to illuminate your opponent's positions on key issues. Develop solid arguments against your opponent's positions on issues. This isn't that hard, given the ludicrous positions the GOP has staked out for itself!
(Note: you can also use this an opportunity to positively portray your positions!)
Rinse & repeat... frequently.
If your esteemed Republican opponent doesn't want to talk about the issues, YOU should make it a point to talk about 'em - and to highlight your esteemed opponent's idiotic positions!