A new poll finds the front-runner in the race for the Mexican presidency has seen his lead narrow in recent weeks.
The survey by the Mitofsky polling agency says Andres Manuel Lopez Obrador's popularity among voters dropped from 39 percent in February to 38 percent in March. Lopez Obrador represents the Democratic Revolution Party, or PRD.
Released Tuesday, the poll also shows that Felipe Calderon of the ruling National Action Party, or PAN, had 31 percent of voter support, up one percentage point. Roberto Madrazo of the Institutional Revolutionary Party, PRI, also gained - rising to 29 percent from 28 percent.
The polling company questioned 1,000 registered voters and says the survey has a margin of error of plus or minus 3.1 percent.
The winner of the July 2 election will replace President Vicente Fox, who by law cannot seek a second six-year term.
Some information for this report was provided by AP and Reuters.