He can also win a share of economic conservatives, social conservatives, foreign policy people and etc. He has already, this early, made inroads with libertarians:
Ted Cruz Reportedly Winning Over Some Rand Paul Supporters in Iowa
http://www.freerepublic.com/focus/f-news/3271921/posts
Ted Cruz Recruits Some Rand Paul Supporters in Iowa
http://www.freerepublic.com/focus/f-news/3271518/posts
IF he wants to secure victory he needs to support drug war reform and fathers rights. Those two issues will pull a ton of support both from the Left and the middle.
Let’s end alimony, encourage states to adopt shared parenting rights, encourage states to enact family law reform as well as custody enforcement. You want to see the radicals scream and howl. These issues will make them go insane.
Let;s dismantle the ATF and the DEA. They are pointless and do more harm to the nation than good. They suck up resources and could easily be replaced by State and Local Gov as well as existing federal law enforcement like border patrol and the FBI. Take half of the ATF and DEA budget and apply it to border patrol and the FBI.