On Thursday, 42-year-old Pita Limjaroenrat failed in his initial bid to win the premiership after he was unable to secure enough votes in a joint sitting of Thailand's 750-member parliament.
Another vote is expected to be held next week, which Pita can contest if nominated again.
But Pita and Move Forward's agenda - particularly a once-unthinkable proposal to amend Thailand's "lese majeste" law - also pit them against the country's powerful conservative establishment, which controls the 250-member appointed senate.
First, Thailand's election commission recommended the Constitutional Court disqualify Pita as a lawmaker because of his ownership of shares in a media company in violation of electoral rules.
Some of those protesters - and some of those demands - were part of Move Forward's electoral juggernaut, including a call to amend the lese majeste law.
Persons:
Thailand's, Pita Limjaroenrat, Pita, Thais, Thaksin Shinawatra, Kannawee Suebsang, Devjyot Ghoshal, Panu, Nick Macfie
Organizations:
Wednesday, Constitutional, Harvard University, Pheu Thai Party, Fair Party, Thomson
Locations:
BANGKOK, Thai, Thailand, Bangkok