mexico city two-thirds mexicans reject offer amnesty members criminal gang way reduce violence country poll show monday days top leftist presidential candidate float idea explore step start december andres manuel lopez obrador tell supporters violence-wracked state guerrero prepare analyze options include amnesty bring peace mexico years violence gang fight fire fire say ask reporter whether amnesty could include drug cartel boss lopez obrador campaign would consider record publish newspaper el universal telephone survey poll firm buendia laredo el universal show 23 percent respondents agree somewhat strongly idea broke amnesty gang exchange pledge reduce violence 66 percent take opposite view eight percent say opinion either way rest give answer violence drug cartels security force blame well 100,000 deaths past decade mexico track register high murder total year since begin keep regular monthly tally 1997. lopez obrador lead early poll july 2018 election provide detail potential scope amnesty aid 64-year-old consult reuters far decline flesh one might work former mayor mexico city lopez obrador runner-up last two elections adversaries seize amnesty paint proposal threat security affront victims organize crime gang truce el salvador 2012 initially cut violence break murder soar new heights buendia laredo survey poll 600 people dec. 7-8 say 16 percent poll felt amnesty would improve security situation mexico 62 percent take opposite view 18 percent believe would make difference rest give answer poll conduct margin error 4.0 percentage point el universal say two-thirds mexicans reject amnesty gang members poll