BOSTON — Democratic state Rep. Diana DiZoglio (dee-ZOH’-glee-oh) of Methuen says she plans to run for the state Senate in November.

The announcement comes just days after DiZoglio delivered a speech on the House floor sharply criticizing Democratic Speaker Robert DeLeo’s use of non-disclosure agreements with departing employees, calling them “silencing tactics.”

DiZoglio is seeking the Essex County district seat being vacated by Democratic Sen. Kathleen O’Connor Ives.

In her speech last Thursday, DiZoglio said she was forced out of her job as a legislative staffer in 2011 after false rumors spread that she and a state lawmaker had engaged in inappropriate behavior. She said she was then forced to sign a non-disclosure agreement before receiving a severance payment.

DeLeo said such agreements were never used to cover up wrongdoing.