Question

Reconstruction ended predominantly for what reason?

Answer 1

Political maneuvering for the election of a particular President. It was part of the "deal" to end a disputed election result.

Explanation:

The Compromise of 1877, also known as the "Corrupt Bargain" or the "Great Betrayal" marked the end of Reconstruction in the South and a return to "Home Rule". The Compromise of 1877 was reached to settle the disputed 1876 U.S. Presidential election. The secret deal ensured that the Republican Party candidate, Rutherford Hayes, would become the next president and that the Democrats would regain political power in the southern state governments.
http://www.american-historama.org/1866-1881-reconstruction-era/compromise-of-1877.htm

President Hayes promised to withdraw federal troops from the South if he became President. He kept his promise, thus ending the Era of Reconstruction in the South.
http://www.historycentral.com/rec/EndofRec.html