Few political leaders of regional parties went to centre either with an ambition of rising to the position of the prime minister or other reasons like indulging themselves in the scams etc.
I don't think any kind of third front can be successful. Such propositions are generally rantings of the politicians failed in their own regions.
Let us encourage each other in sharing knowledge.
My view would be people can unite and form a third front, come to power in a handful of states, stabilize at the state level and then eye for the National level politics. Being in power at a state necessarily doesn't mean that they can come to power in the center. People are also good enough to understand the real reasons for the new front. My gut feeling in that these new alliances would not last for long and the only impact it can make is a split in the number of seats won by BJP or Congress.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease