Voters elected members of the Arizona Senate in all 30 of the state's legislative districts to serve a two-year term.

On February 8, 1988, the Arizona House of Representatives voted to impeach Governor Evan Mecham.

On March 30, 1988, the Senate voted to dismiss Article II (pertaining to false sworn statements) for fear of putting Mecham in a position of quasi double jeopardy due to the ongoing criminal proceedings in the Superior Court of Maricopa County.

[8] The Presiding Officer announced that by a vote of 26 ayes and 4 noes, Evan Mecham was convicted of high crimes, misdemeanors or malfeasance in office, as contained in Article III of the Articles of Impeachment.

[c][10] The table below summarizes the votes of each Senator during the Mecham impeachment trial and their subsequent fate in the 1988 elections.