audience and the rnc

Because a national convention involves staging an interaction between the party and a supportive audience for a larger national audience that includes undecided or even hostile "overhearers," the GOP and the Dems are faced with a tricky rhetorical situation. The NYT's David Kirkpatrick writes about one strategy for managing multiple audiences and multiple messages:

At a closed, invitation-only Bush campaign rally for Christian conservatives yesterday, Senator Sam Brownback of Kansas called for a broad social conservative agenda notably different from the televised presentations at the Republican convention.