This garbage about a 2nd or 3rd ballot is just that. There is no way Cruz can ever convince enough delegates to vote for him over Trump in any round No matter what Trump will always end up with more delegates. That’s how big his lead is and resounding his support is.
For example, Goldman Sachs or another bank could BUY the home mortgages of every New York, California and Florida delegate, and call them all in. That day. This is a tactic the Dems have used before on delegates. Many or most delegates would not have the liquidity to make those called-in loans whole. Not to mention, a delegate gets a phone call and the caller says, it sure would be ashamed if your wife and adult kids found out you have a woman (or man) kept in an apartment in the city the last few years. Vote Cruz and they don't have to learn about it. THIS is what some call the "ground game", or "using the rules to your advantage."
I'm optimistic, not pessimistic. But also very very ware of REAL POLITIC. And trillions of dollars are at stake if Trump busts up the status quo.