I don't know how you reached the conclusion that there would be an election. The seat would remain vacant.
Assuming it can't be filled by the exceptions specified in Section 3 (which it can't), would this not apply?
If a vacancy shall occur in a Class B Senate seat more than twenty-one days before the regularly scheduled election for that seat, then a special election shall be called to fill the remainder of the vacated term within one week of the vacancy occurring; Special elections to the Senate shall begin within ten days of the vacancy occurring and shall begin between midnight Eastern Standard Time on a Thursday and 0001 Eastern Standard Time on the first Friday thereafter, and shall conclude exactly 72 hours after beginning.
