Ok. Const. art. VIII, § 4
OK Const., Article VIII, Section 4
Length: 45 wordsOfficial source
Oath or affirmation - Number concurring. When the Senate is sitting as a Court of Impeachment, the Senators shall be on oath, or affirmation, impartially to try the party impeached, and no person shall be convicted without the concurrence of two-thirds of the Senators present.