the Vice President the choice rests with the Senate.[126] [Sidenote: The “availability” of candidates.] =Factors which Influence Presidential Nominations and Elections.=—As matters have worked out it is not possible for anyone to be elected President without first obtaining a nomination from one of the two leading political parties. The party organizations and the party conventions are influenced by groups of political leaders and these leaders are often more interested in a man’s strength as a candidate than in his personal qualifications for the work which a President has to do. The consequence is that candidates have sometimes been nominated by party conventions because they were compromises on whom opposing factions of the party could agree, or because they could be counted upon to carry some important state at the polls, or for some other reason having nothing to do with the executive capacity of the individual concerned. [Sidenote: “Dark horses”] A big national convention, comprising more than a thousand delegates, cannot be expected to do its work with calm deliberation or to weigh carefully the personal qualifications of all those who seek to be nominated. If there is a prolonged contest between two or three strong candidates, no one of whom can obtain the requisite number of votes in the convention, the delegates in their impatience are likely to turn to a “dark horse”, that is to someone less prominent on whom there is a chance of agreement.[127] This has often happened. The real work of nominating candidates is not done on the floor of the convention. The plans are laid and put into operation by groups of leaders in private conferences, the delegates following these leaders when called upon. And the fact that a candidate possesses “great and striking qualities” does not always commend him to these party leaders. On most occasions they are likely to prefer a man who, if elected, will work in harmony with the party organization rather than take the reins of office wholly into his own hands.[128] By various combinations of circumstances, therefore, men of mediocre quality have sometimes been nominated. [Sidenote: The election may turn upon various things.]