Former TDP MP Pandula Ravindra Babu who recently joined YSRCP on Wednesday rubbished reports of his return to the N Chandrababu Naidu led party.
"These are all rumours, they are baseless and have no truth in it," Ravindra Babu said.
Babu, who was an MP from Amalapuram in East Godavari district resigned from his post and quit TDP to join the YSRCP on February 18.
As many as 25 MLAs and three MPs have quit YSR Congress Party to join TDP in the run-up to Lok Sabha elections.
The YSRCP chief, Jaganmohan Reddy, is scheduled to start the election campaign with a 'bus-yatra' on Saturday from Idupulapaya. He will is also expected to announce the party's candidates on the same day.
Andhra Pradesh will hold simultaneous Assembly and Lok Sabha polls in a single phase on April 11.