In a letter to President Ram Nath Kovind, YSRC chief and leader of opposition YS Jaganmohan Reddy regretted that no action has been taken against the defectors, in accordance with the Tenth Schedule of Constitution, in the last one-and-a-half-years despite several petitions filed with the Legislative Council Chairman and the Assembly Speaker.
"This is, to say the least, a grave assault on Constitution and democratic spirit. We brought this grave constitutional violation to the notice of all important constitutional institutions but no action has been taken against the defected legislators and, worse, four of them were made ministers in the AP government," Mr Reddy pointed out.
He said the YSRC legislature party, at its meeting yesterday, adopted a resolution deciding not to attend the ensuing session of the state legislature till the 20 MLAs and one MLC, who defected to TDP, were disqualified.
"The four defected MLAs who were made ministers should be dropped forthwith as their continuation in the state Council of Ministers is not only highly unethical but also unconstitutional and a mockery of democracy.
"And till such time these demands are met for conduct of assembly in a fair and democratic manner, we see no meaning in attending (the sessions). And worse, if we were to attend the assembly, then this mockery would stand ratified and, hence, we chose to stage this protest," Jaganmohan Reddy said.
Meanwhile, the TDP strongly criticised the YSRC over its decision to boycott the Assembly.
In a statement here today, Legislative Affairs Minister Yanamala Ramakrishnudu said the decision to boycott the legislature was "yet another mistake" being committed by Mr Reddy.
"Jagan has no faith in democracy, Constitution or the legislature. He has committed several mistakes and, to cover them up, he is running away from the courts and now the legislature as well," Yanamala ridiculed.
It was only because of Jagan's mistakes that half of his MLAs had deserted him, he added.