"The Congress-led UPA is down and on the way out. The NDA is in no position to pick up. A 'third alternative'(front) will emerge at the Centre and form the next government," Chandrababu said, delivering the inaugural address at the TDP's annual conclave Mahanadu at Telugu Vijayam at Gandipet near here this afternoon.
The TDP played a key role in the formation of three out of four non-Congress governments at the Centre so far.
Criticising Congress, the TDP chief said the UPA government was stuck deep in numerous scandals.
"This is such a weak government that even our neighbours are getting aggressive against us. It has failed to ensure law and order in the country. Terrorist strikes have become a common feature while there is no security to women," Chandrababu said.
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The Congress-led government at the Centre and in the state were the most "inept and corrupt" governments, he added.
"It was only because of the relentless pressure exerted by the TDP that two of the 'tainted ministers (facing charges in the illegal assets case of Y S Jaganmohan Reddy) were finally dropped from the Kiran Kumar Reddy Cabinet.
"But there are more tainted ministers in the Cabinet and we will fight uncompromisingly till we see their back," Chandrababu asserted.