Is John McCain about to get Scozzafava’d?

This from today’s Politico:

[Arizona Senator John] McCain must still closely monitor the [AM talk] radio rhetoric to avoid the fate of Dede Scozzafava, the upstate New York GOP special election nominee last year who became a national punching bag for conservative radio hosts, and Florida Gov. Charlie Crist, who’s been harangued by conservatives for his hug with President Obama.

McCain faces a fierce primary challenge, though he’s currently leading in the polls.