There is another reason that comes across in this video from Freedom Works and it has to do with the ability to inspire and encourage.
Right out of the gate, Cruz doesn't just tell the audience what he knows they want to hear - that they are 'winning' - but he does it in such a way that it's believable. He then proceeds to make the case by citing what happened in the recent gun control debate. The story he relays from a Senatorial luncheon is classic and has John 'wacko bird' McCain written all over it.
Look, the Tea Party in particular and the conservatives in general started becoming demoralized and a bit more crestfallen each day it became more apparent that Mitt Romney was going to be the Republican nominee. Rock bottom was hit on election night. Establishment Republicans in office began caving to the Obama agenda almost immediately. Conservatives were so de-energized that they did little more than watch in disgust.
If there has been a consistent theme among conservatives since the election - perhaps even since the 2010 mid-terms - it's been disgust over the Republican Party's willingness to admit the truth and fight the Obama agenda.
Ironically, Cruz said establishment guys who wanted to cave in to the gun control push, yelled at him for not going along with the program. It's a self-evident truth that such political hacks are more comfortable yelling at a principled member of their own caucus than they are at our "Muslim socialist" president.
By the way, those aren't my words; they're Obama's: