:Some anectdotal background from a native: "sufragio efectivo, no reelección" means "effective vote, no reelection", and was a banner for the revolution that deposed Díaz; it's also the reason Mexican presidents can only serve one term. While it was a motto of the revolution, and was institutionalized into stamps and stationery by the (aptly named) Institutional Revolution Party, it's not much of a rallying cry for the general Mexican. Not a motto. Can't think of one...