It makes for more gridlock, not less. It also opens the door for more corruption, because many “coalition parties” are just fine with settling into a losing position (this is something the GOP is often accused of). //

2.Unanimity in ideology helps keep the Executive Branch in check. In America our system provides for an executive election every four years and a legislative election every two years. That means that Americans are given the unique opportunity to elect a leader from one party, but may opt to keep him in check by electing the opposing party to Congress. In a multi-party system, coalitions fighting amongst each other for “favored loser” status and reenacting a political version of Survivor can prevent the legislative body from focusing on the Executive Branch when necessary. //

3.A two-party system offers just as many choices as a multi-party system, but those choices happen at lower levels. (primary elections) //

4. It simplifies federal governance and allows a President to represent America on an international stage with a people-powered mandate. //

Despite how powerful the President seems to other nations, he is only that powerful if he has a concerted mandate and full-throated support of the majority of his electorate. The people make the President. A two-party system allows voters to consolidate their votes where it counts when it comes to how a President represents us on a national stage.