Both presidentialism and parliamentarism are unequivocally democratic, but each of these regimes leads to different political consequences.
The great difference is that in parliamentarism the executive branch is composed of a president or a monarch, head of state, with limited powers, and a government appointed by Parliament, which at any time can censor. In presidentialism, however, the head of state and government coincide in the same person, are not subject to parliamentary censure and the Legislative Branch is limited to the area of law making.
Therefore, in presidentialism, voters elect the head of government (who in turn is head of state); instead, in parliamentarism, the head of government is appointed by the head of state, who is voted by the people.
It is true that the most horrendous terrorist act in the United STates in the 1990's was the bombing of the Murrah Federal Building in Oklahoma. Timothy McVeigh and Terry Nichols made, planted, and activated several bombs at the federal building. There were 168 people killed on this day and more than 680 injured.
Answer: The 1960 televised debate between Kennedy and Nixon had a major impact on the election's outcome, as well as ushered in a new era in which crafting a public image and taking advantage of media exposure became essential ingredients of a successful political campaign.