Many factors.
I think of concern is the number of troops that are still loyal to
Thaksin, are they going to allow themselves to be commanded by this
new junta or are they gonna bare arms to protect and preserve their
vested interests.
However, since the King has come out on national TV and met openly
with the coup leaders, I guess it shows on his part, tacit support
for the coup. If the King supports it, I guess that repels whatever
Pro-Thaksin sentiment left amongst the populance. The Thais hold
reveared respect and adoraton for their king, and going against his
prerogatives would be unthinkable. However, disillusionment amongst
the popualnce to the coup would come in other forms. For example a
break down of authority in areas with pro-Thaksin sentiments.
It'll be interesting to watch the developments in the coming days,
especially new decrees drawn up by the junta.