If the voting for the All-Star game were to end today, the Cubs would have the entire starting infield...Anthony Rizzo (1B), Ben Zobrist (2B), Addison Russell (SS), and Kris Bryant (3B).
The closest they've ever come to pulling that off was in 1969. That year Don Kessinger (SS) and Ron Santo (3B) were both all-star starters, and Ernie Banks (1B) and Glenn Beckert (2B) were all-star reserves. Willie McCovey started at 1B, and Felix Millan started at 2B.