They’re disappointment can’t be directed at Sarah, IMO It’s their own assumptions that they are going on.
We're not talking about a small handful of die-hard supporters here. Sarah has suddenly got the whole world speculating about this, and you can bet your bottom dollar that the entire political class is losing sleep over it.
The anticipation about Sarah's probable announcement has built into a firestorm of white-knuckled excitement. The Indianola event is going to likely be the most well attended event of its type that we've ever seen, because everyone expects her announcement.
No, Sarah has been busy throwing high quality fuel on this fire, and she's well aware of what the expectation is. She's big enough to know that she's got to stand strong and walk through the door that she herself kicked open, or bear the brunt of the disappointment she'll bring to millions.
She's smart enough to understand that she's kept everyone waiting for as long as she could, and now that she's helped to fuel this much speculation, that the time to end it is now.
As much as she might want to hold out for a more strategically opportune moment to enter the race, she just cancelled that by releasing the "Iowa Passion" video. She's crossed the Rubicon.