• One reason for the collaboration between secular parties is to prevent the spread of communalism and divisive politics.
• CPI's D. Raja believes that the BJP has been pursuing a Hindutva ideology that threatens to undermine India's secular fabric.
• Therefore, secular parties are working together to prevent the BJP from gaining a foothold in different regions of India, as their policies could be harmful to religious minorities and other vulnerable groups.
• Furthermore, D. Raja believes that the BJP's recent election victories have emboldened their extremist elements, and this trend must be stopped.
• Finally, the CPI leader has argued that secular parties must work together to promote the principles of social justice, economic development, and democracy - united they can better achieve these goals.

In conclusion, secular parties in India may have different ideologies and policies, but they have come together to defeat the BJP and counter the Hindutva ideology that threatens the secular fabric of India. They are also committed to promoting social justice, economic development, and democracy.