"This election is not only about the development of country. This election is to safeguard the constitutional framework which our freedom fighters, our forefathers have bestowed on us after much struggle and sufferings.
"This Constitution recognises our secular values and teaches us how to respect them," she said addressing a rally here, in a veiled attack on BJP and its prime ministerial candidate Narendra Modi.
Sonia Gandhi went on to say that Congress will fight for a country which is not just for a few but a country which belongs to everyone and where everyone enjoys equal rights.
"We will fight for a country where it is not important what is our religion, language, place of birth or in which caste we were born, but we will fight for a country which is secular and where it is important that we all are Indian," Sonia Gandhi said.
The UPA chairperson said no other government has undertaken as much developmental activities during the last 10 years as done by the Manmohan Singh government, including in the backward region of Mewat.
"You can see the changes which have taken place here (Mewat) if you compare the development with the previous government here, be it giving backward region status, providing drinking water facilities or developing a separate cadres for teachers and doctors,", she said.
Sonia Gandhi said Congress manifesto also promises right to health for everyone, even as it has fulfilled its promises on rural job scheme, implementation of Right to Education and RTI, besides stringent law to stop violence against women.