The Morning Briefing: more jobs, polls, and NASCAR

The 1600 Report Blog's daily roundup of what the White House is reading this morning online and in the papers:

*The incredible shrinking Obama [Politico]

*Obama hits new lows among strongest 2008 supporters [Washingtonpost.com]

*A Campaign Challenge: Defining Obama [New York Times]

*Will Obama Meet with Boehner, Cantor? [WSJ: Washington Wire]

*Obama jobs plan to include $300 billion in tax credits, spending [LA Times]

*Blitzer's Blog: Cheney refuses to admit any mistakes as vice president [CNN.com]

*President to honor Johnson, 2010 Chase drivers [NASCAR.com]