Brokered convention
(重定向自Open convention)
In the United States' politics, a brokered convention, closely related to but not quite the same as a contested convention, either of which is sometimes referred to as an open convention, is a situation in which no single candidate has secured a majority of overall delegates (whether those selected by primary elections and caucuses, state conventions, or superdelegates), after the first vote for a political party's presidential candidate at its national nominating convention.