Hillary Clinton has followed this set of rules to perfection throughout her adult life. As a result, she is probably the best-qualified non-incumbent ever to seek the American presidency. But responses to her show us that voters do not want a woman president who behaves like a man. When Clinton behaves in masculine ways (exhibiting a serious, non-nonsense manner and tone of voice, remaining calm and in control even in the face of provocation), she is perceived as cold and unsympathetic. On those (rare) occasions when she has shown emotion in public, voters have warmed to her. This happened most famously during her previous attempt to become president in 2008, when she came close to tears in front of voters and the press. Her victory over Obama in the New Hampshire primary was attributed to this display of vulnerability.
Article source: http://www.huffingtonpost.co.uk/jenny-mathers/united-states-election-female-clinton_b_12653224.html?utm_hp_ref=uk-politics&ir=UK+Politics