Boo hoo hoo. I'm no John McCain fan, but there are plenty of swing voters who are. So as long as he doesn't say something stupid, I'm glad he's speaking. The conventions aren't for the base. They're for the undecided.
Is conservatism incapable of persuading undecideds?
About half of the "life long Republicans now fed up with Bush" posters you see on FR are actually DUh trolls. The other half are Buchananites. Impossible to tell which is which, though, as they are naturally interchangeable (with or without disguises).
That's pure baloney. Political conventions don't sway voters. Political conventions are meant for loyal party activists to gather together and nominate their choice to run for POTUS. It's a big rally designed to call to action the party faithful and come together to renew an effort by joining in a common cause.
The Republican National Convention delegates are mostly made up of conservatives. Just like the Democratic National Convention will be made up of mostly liberals.