mexico city mexican front-runner next year election andres manuel lopez obrador formalize bid presidency tuesday promise government would spend young elderly farmers left-winger lopez obrador 12-point lead one recent poll want significantly change mexico approach economy security education vow support poor without new tax high debt level promise cheap fertilizer fix produce price farmers goal make mexico self-sufficient food also offer pay apprenticeships unemployed youth grant students high pension elderly expand popular welfare program introduce govern mexico city win 64-year-old self-declared nationalist july could reverse latin american trend toward right-leaning governments set stage friction u.s. president donald trump anti-migrant language policies lopez obrador promise friendly tie u.s. government say would accept racist hegemonic arrogant attitudes also propose shakeup government say would move dozen ministries federal body include state oil company pemex capital regional towns federal government decentralize lopez obrador say speech capital register intention run national regeneration movement morena party also promise increase fuel price clear language yet repeat intention consult victims drug crime possibility offer amnesty criminals commit rehabilitation aim explore possibilities curb violence guarantee peace people mexico say poll week find two-thirds mexicans reject idea amnesty country track deadly year modern history nearly 21,000 murder october lopez obrador unsuccessfully run presidency twice likely face jose antonio meade run rule party ricardo anaya head left-right coalition opposition party say would finance spend plan past say new spend would fund end government corruption waste story refiled add meade full name paragraph 11 mexico 's presidential front-runner vow welfare formalize bid