What is the main difference between a presidential and parliamentary democracy? a. in a presidential democracy, the president is elected by representatives from each region while in a parliamentary everyone votes b. in a presidential democracy, the president inherits his or her power while in a parliamentary, people elect representatives that then chose the leader of the country c. in a parliamentary democracy, citizens elect representatives that chose the leader of the country but in a presidential democracy, the people elect the president and the local leaders d. in a parliamentary democracy, citizens elect both the representatives to the parliament and the president but in a presidential, they only elect the president