NEWSWEEK: Clark, Gephardt, Edwards Being Vetted as Potential Kerry Running Mates; Insider Predicts Decision Will Be Made by End of This Month

Gen. Wesley Clark appears to be at the top of the list of candidates being considered to become Sen. John Kerry's running mate. Clark would lend the campaign extensive military credentials as a retired four-star general.

The timing of Clark's vetting is intriguing given that he provided the Democratic response to President Bush's radio address this past weekend, and also appeared on Meet the Press on Sunday.