A touch display panel includes: a common electrode; a first switching element connected between a voltage line and the common electrode; a data line transmitting a data signal during a display period and a touch sensing signal during a touch period; a pixel electrode; a second switching element connected between the data line and the pixel electrode; and a third switching element connected between the data line and the common electrode. During the display period, the first switching element and the second switching element are turned on and the third switching element is turned off. During the touch period, the first switching element and the second switching element are turned off and the third switching element is turned on.