Call it the incredible shrinking campaign. Over the last two weeks, more potential candidates have bowed out than jumped at the chance of succeeding Rep. Christopher Cox (R-Newport Beach), nominated this month by President Bush to chair the Securities and Exchange Commission. Just days after the Free Enterprise Fund, a conservative fundraising group in Washington, launched a campaign to draft James Rogan, the former congressman from Glendale said Friday that he was flattered but wasn't in the running. "I don't anticipate being a candidate, barring some unforeseen event," said Rogan, who also served as undersecretary of commerce during Bush's first...