This week, President Obama finds himself facing his first public opinion crisis as several different national surveys showed his job approval below 50% over the past 10 days. The Marist and Quinnipiac surveys both put his job approval at 46%. CNN had it at 48% while Ipsos/McClatchy had it at 49%. But it was the Gallup daily tracking, which finally dipped below 50%, that pushed Press Secretary Robert Gibbs to an uncalled for denigration of the respected polling organization, comparing their results to a “six-year-old with a crayon.”Why is this important? Gibbs testy response isn’t. But the president’s downward spiral certainly has serious implications for both his ability to govern and to enact his policy agenda. Simply put, if a Presidential job approval is below 50%, a governing majority coalition does not exist and without a governing majority, controversial policies like health care and cap and trade are relegated to the uphill climb of minority status.