Ted Cruz, buoyed by tea party support and the backing of much of the conservative wing of the Republican Party, has surged to a virtual tie with Donald Trump in Iowa, generating the kind of momentum his team thinks will carry him deep into primary season. “Sixty-eight days until Iowa,†said Cruz spokeswoman Catherine Frazier, when asked whether the Texas senator was peaking too soon. “It’s game time.†A Quinnipiac University survey released Tuesday found Cruz essentially deadlocked with longtime poll-leader Donald Trump in Iowa: Trump stood at 25 percent and Cruz at 23 percent, within the margin of error....