Representatives shall be apportioned among the several States which may be included within this Union according to their respective numbers, counting the whole number of persons in each State, excluding Indians not taxed.

But whenever in any State the elective franchise shall be denied to any portion of its male citizens not less than twenty-one years of age, or in any way abridged, except for participation in rebellion or other crime, the basis of representation in such State shall be reduced in the proportion which the number of male citizens shall bear to the whole number of such male citizens not less than twenty-one years of age.
"SECT.

3.

Until the fourth day of July in the year 1870, all persons who voluntarily adhered to the late insurrection, giving it aid and comfort, shall be excluded from the right to vote for representatives in Congress and for electors for President and Vice-President of the United States.
"SECT.

4.