Das, a former Bihar chief minister who was first elected to Lok Sabha in 1991 at the age of 70, rued that the character of national political parties has changed drastically over the years and they are divided on the basis of caste, religion and region.
"All national parties have been turned into regional parties. Their character has changed and all this is because of petty self-interest," Das claimed.
He said that with increasing political uncertainty, problems have also increased.
"Factionalism has increased, so has group-ism. Political parties are divided into different groups on the basis of caste, religion and region. And they are making compromises for small gains," Das told PTI.
Age may not be on his side but Das doesn't want to loosen his grip on politics as he keeps himself busy in campaigning and consequently combating the summer heat.
He said that there has been a sea change in the poll campaign over the years.
In 2009, Das defeated Paswan by nearly 38,000 votes
"Politics has seen a lot of degradation. Logical arguments should take place in a healthy democratic process... One can raise thorny issues, but in a dignified manner and within certain limits," Das said.
Besides Das and Paswan, Sanjeev Prasad Toni of the Congress, Dhaneshwar Ram of the Bahujan Samaj Party and the Samajwadi Party's Veerchandra Paswan, among others, are also in the fray for the May 7 polls.
In 2009, Das defeated Paswan by 37,954 votes.
Born in Gangajal village of Bihar's Saran district on January 9, 1921, Das joined Congress Socialist Party in 1945 and later Praja Socialist Party before becoming a member of JD(U).
On changes in the democratic process that he has witnessed through these years, Das said, "Democracy is a very hard-earned asset. It is there and will be there. There is no better system than democracy."