The most important consideration of all in a slow-play, of course, is that you’re conserving resources while making you’re opponents burn through theirs. They underestimate your strength.
Isn't that what we've watched happen? Nicole at C4P continues:
After Bachmann raised, it forced Pawlenty to fold, and encouraged Perry to join the betting. Perry’s continued bluff (that everyone has now caught on to) has sweetened the pot even more for Governor Palin. She hasn’t risked much so far while others are mortgaging the farm and betting aggressively.