Devil's advocate: I don't see how a registered voter can be denied a chance for a lawsuit based upon injury. A voter may be affected because the candidate he prefers may be in a "compromised" election based upon vote allocation, thereby affecting his actual vote, which constitutes damage. Frankly, any lawyer that doesn't argue that very real problem and introduce close federal election results (including Florida 2000 presidential) is not being very thorough, and judge that rules against the continuance of the voter's lawsuit for that reason is being selective toward his judgment.
THAT SAID: Cruz has standing based upon having a parent whom is a citizen of America. Ironically, two foreigners can hop the border, drop their kid, and immediately go back to Mexico, and that kid is legal to be president based upon current law, even if that kid spent his entire life in TJ running drugs and guns for El Chapo, while the baby of an American servicemember with a German spouse born in a German (not on-US base) hospital is not eligible, based upon the irrational argument by the lib birthers. There are only two ways to be a citizen: natural born, or naturalized. Cruz was never naturalized because he has always been natural born.