One thing about presidential government that is better than parliamentary government is how the leader is chosen. In a presidential government the people choose their leader. This gives the people more say in their country and who governs it.
Only four countries in the world today do not identify themseves as democratic in one form or another. These are Saudi Arabia, Myanmar (Burma), Brunei, and Vatican City. Of the other countries there are many that claim to be democratic, but in practice are too corrupt, too volatile, or have too many restrictions on human rights to be considered "true democracies" According to the Democracy Index produced by the Economist Magazine there are 30 Full Democracies: Where national elections are free and fair, voters are free to vote in safety, there is no manipulative influence by foreign governments, and the civil cervice is capable of administering polices effectively. 50 Flawed Democracies: Countries that practice democracy, but have some significant problems with the process. 36 Hybrid Regimes: Where there is some democratic elements but they are often hampered by corruption or threat as to be less effective than they might otherwise. 51 Authoritarian Regimes: Where the state claims to be democratic but in practice there is little or no democracy in the process or running the nation. The "Full Democracies" according to the Democracy index are: Sweden, Norway, Iceland, Netherlands, Denmark, Finland, New Zealand, Switzerland, Luxembourg, Australia, Canada, Ireland, Germany, Austria, Spain, Malta, Japan, United States, Czech Republic, Belgium, United Kingdom, Greece, Uruguay, France, Portugal, Mauritius, Costa Rica, South Korea, Italy, and Slovenia
Theoretically, the legislative branch of government has more power in a Parliamentary system than in a Presidential system of government.
There is no evidence that in a democratic country, a parliamentary system is any worse or better than a republic form of government. With the assumption that the democratic country is truly democratic, than its citizens will adapt a form of government best suited to the country's needs.
A quasi-presidential system is one in which a nominally parliamentary government elects its Prime Minister (or executive head) directly rather than by simply allowing the leader of the governing party to take the office.
This question doesn't really belong in the US-related sections; since the US uses a presidential rather than a parliamentary system, parties don't "form a government." In a parliamentary system like the one in the UK, when two parties cooperate it's known as a coalition government.
Parliamentary government
Parliamentary government
Parliamentary government
Parliamentary government
In parliamentary democracies, the Head of Government is not directly elected by the voters nor elected by an electoral college. Instead, the composition of the government is indirectly determined by the composition of the national or federal legislature - the executive draws its power and depends upon the support of the legislature to govern. Usually in parliamentary democracies, a Prime Minister, Premier or very rarely a President (like in South Africa) is elected by the national legislature immediately after legislative elections. As such, rather than fighting to win a single national office, political parties and coalitions fight to win more than half of the seats in the national legislature (an overall majority) so as to ensure their preferred candidate for Prime Minister/Premier/President will be elected. This system also means that an incumbent Head of Government can be removed and replaced - possibly by a candidate from a completely different party, and not necessarily the outgoing Deputy Prime Minister/Vice-President - without the need to call an election, if the balance of power in the legislature changes, though this is rare. In contrast, in presidential systems, a single man or woman is elected by the public to lead the nation and form a government for a fixed term in office, and can usually only be removed by impeachment, resignation or death. Whereas in parliamentary systems the Head of Government has to resign if he or she loses the support of the legislature, in a presidential system, he or she can continue to govern and lead a government even against a hostile legislature. In presidential systems, the President is usually replaced (in the event of their departure before a scheduled election) by a candidate from a strict line of succession, almost always from the same party. Presidential systems also usually feature fixed-term elections (e.g., every four years), whereas in most parliamentary systems, elections are usually held within a maximum term (e.g., must be held on or any day before the fourth anniversary of the last election as the government desires). Presidents may also have the power of veto over legislatures in presidential systems, whereas in parliamentary systems, the Head of Government's power of veto stems from his or her direct control over the legislature. Very rarely, countries can have both parliamentary and presidential systems (a semi-presidential system). France is such a country, where the Prime Minister and Cabinet are chosen as in a parliamentary system, but the President is chosen as in a presidential system, and government responsibilities are divided between the two. Usually, when the President also controls the legislature, he or she will be the effective leader of the nation - however, should he or she lose control of the legislature in a legislative election, then unlike in parliamentary systems they will remain in office, but unlike in presidential systems, the opposition will form a government. In those situations, the President is usually relegated to managing the nation's foreign policy only.
The name of a government where the legislative branch is more powerful than the executive branch In fact the executive branch is normally chosen out of the legislature, is known as a Parliamentary government.
There are many differences, here I will mention what I deem to be the most important: Presidential :1) In a Presidential System the President is both Head of State and Head of Government. Presidents under this system almost always have the most power. 2) In a Presidential System there is a (more often than not) complete separation of powers. 3)The President usually relies on a popular mandate (elections) and not the confidence of the legislature to gain and/or hold onto power. 4) Legislative terms are fixed, a legislature in a Presidential system can't be dissolved Parliamentary: 1) In a Parliamentary system there is a complete separation btwn the Head of State (Monarch or President) and the Head of Government (Prime Minister or Chancellor) . 2) In a Parliamentary system the Head of Government usually holds the most power the Head of State may hold some emergency powers and also gives laws the final approval. 3) Separation of powers are blurred in Parliamentary systems (example: The Govt of the UK is formed of members of parliament) 4) The Government must hold the confidence of the legislature to continue its mandate of governing (simply put the Prime Ministers party or coalition must hold a majority in the legislature). 5) Parliamentary systems do not have a fixed term usually only a maximum number of years, if the legislature finds no confidence of the government of the day then the legislature may be dissolved and new elections held)