June 11: Iran's historic election campaign reached a crescendo over the past few days as tens of thousands rallied in Tehran, but rallies were barred Thursday to give voters a chance to consider whether they want to keep hard-line President Mahmoud Ahmadinejad in power. NBC's Richard Engel reports.


![Matchbox Twenty - How Far We've Come [video]](http://cache02.casttv.com/104x/1/4ca4aa4322f9889093076df67841e4c3.jpg)



