I take ANY statistics quoted by politicians with a grain of salt. These days with the ready availability of the internet, most folks can find numbers to back up most any statement, no matter how outrageous. It doesn't take much instruction in statistics to know that numbers are easily manipulated. Most politicians are clueless about even the most basic fundamentals of mathematics, but that certainly never stops them from throwing around "facts" and figures implying they are gospel.
A classic example is Algore and his endless BS about climate change. For a man who has trouble speaking in complete sentences, believing his interpretation of scientific data is insane.