Voting on whether to incorporate Starbase, the SpaceX-anchored enclave at Cameron County’s Boca Chica, will end May 3.

Voters will decide whether or not to formally launch Starbase as a Texas town, which the SpaceX CEO has long pursued.

It has been a rough patch for Mr. Musk, but he is about to realize a dream for SpaceX, its employees and for himself, his own ...