State GOP chairman doesn't rule out December date for Iowa's caucuses.
Former Apple CEO Steve Jobs demonstrating the new iPhone, September 2007.
President Obama speaks about the American Jobs Act in Columbus, Ohio, Sept. 13, 2011.
Former Alaska Governor Sarah Palin will not be making a run for the White House in 2012. NBC's Andrea Mitchell reports.
Former Alaska Gov. Sarah Palin (R) announced she will not run for president.