<p>All eyes are on Denver, Colorado where Republican Mitt Romney hopes to regain ground lost in recent days to Democrat Barack Obama at the first presidential debate. </p><br /><p>History has proven that presidential debates can be game-changers. Richard Nixon was challenged by his opponent John F. Kennedy to a series of televised debates, the first in American history.</p><br /><p>The Nixon Kennedy debates would forever change the way Americans chose their presidents as political rallies became much less important than the image on the television screen.</p><br /><p>The first debate was costly to Nixon as the radio audience thought he had won, but the largest television audience in history instead said Kennedy won. </p><br /><p>They went into the night tied, but Kennedy promptly surged into the lead.</p><br /><p>The 90-minute showdown will be the first of three televised Obama vs Romney encounters in October that will set the tone for the final month of the presidential campaign.</p><br /><p>The debate will be held Wednesday at 9 p.m EDT at the University of Denver.</p>
