The instant the pressure of one supreme power was removed, the two parties imbodying the aristocratic and popular principles rose into active life. The state was to be a republic, but of what denomination? The nobles naturally aspired to the predominance--at their head was the Eupatrid Isagoras; the strife of party always tends to produce popular results, even from elements apparently the most hostile. Clisthenes, the head of the Alcmaeonidae, was by birth even yet more illustrious than Isagoras; for, among the nobles, the Alcmaeonid family stood pre-eminent. But, unable to attain the sole power of the government, Clisthenes and his party were unwilling to yield to the more numerous faction of an equal. The exile and sufferings of the Alcmaeonids had, no doubt, secured to them much of the popular compassion; their gallant struggles against, their ultimate victory over the usurper, obtained the popular enthusiasm; thus it is probable, that an almost insensible sympathy had sprung up between this high-born faction and the people at large; and when, unable to cope with the party of the nobles, Clisthenes attached himself to the movement of the commons, the enemy of the tyrant appeared in his natural position--at the head of the democracy. Clisthenes was, however, rather the statesman of a party than the legislator for a people--it was his object permanently to break up the power of the great proprietors, not as enemies of the commonwealth, but as rivals to his faction. The surest way to diminish the influence of property in elections is so to alter the constituencies as to remove the electors from the immediate control of individual proprietors. Under the old Ionic and hereditary divisions of four tribes, many ancient associations and ties between the poorer and the nobler classes were necessarily formed. By one bold innovation, the whole importance of which was not immediately apparent, Clisthenes abolished these venerable divisions, and, by a new geographical survey, created ten tribes instead of the former four. These were again subdivided into districts, or demes; the number seems to have varied, but at the earliest period they were not less than one hundred--at a later period they exceeded one hundred and seventy. To these demes were transferred all the political rights and privileges of the divisions they supplanted. Each had a local magistrate and local assemblies. Like corporations, these petty courts of legislature ripened the moral spirit of democracy while fitting men for the exercise of the larger rights they demanded. A consequence of the alteration of the number of the tribes was an increase in the number that composed the senate, which now rose from four to five hundred members.