There are more than 1.4 million people in the Bronx — but Ted Cruz couldn’t even muster 100 at a campaign event in Parkchester with state Sen. Ruben Diaz Sr., a conservative Christian minister. Cruz visited the Sabrosura Chinese-Dominican restaurant, where Diaz said the presidential candidate could “listen to the social, economic and spiritual needs of our community” while dining with other clergymen on the eatery’s famed fried rice and plantains.