Nightly News | June 30, 2012
>>> tonight they're gearing up for the presidential vote in mechanics psycho. it's an election with a lot on the line both for that country's war on drugs and the impact it has along our southern border. we get our report tonight from nbc's mark potter .
>> reporter: the murders this week of three federal police officers allegedly shot by two fellow officers smuggling cocaine at the mexico city airport have brought the drug war to the forefront days before the mexican presidential election . president caldron's war has costed an estimated 55,000 lives and is defined by the unspeakable barbarity.
>> people are upset with the violence and tired of being afraid in their own hoems.
>> reporter: all the presidential candidates including the clear front-runner vowed it to reduce the violence, but that could mean easing up on drug cartels to focus more on street crime .
>> people are fed up with the war. he's a politician, and he will feel that it's time to move on and perhaps look at this whole issue in a different way.
>> he's from the party known as the pre, t. they ruled mexico sbl accusations of widespread corruption and cronyism.
>> there's uneasiness that this may be the same party that made deals with drug traffickers in the past, and they want evidence in the u.s. government as many mexicans do that this is a new and reefr rooemformed party.
>> reporter: u.s. officials worry it could lead to more narcotics entering the u.s. here in mexico the retort is that the u.s. needs to do a lot more to reduce its consumption of drugs, along with the flow of guns and money to the cartels. outgoing president calderon's war on drugs is a costly battle. the question now is how firmly has successor will continue the fight. mark potter , nbc news, mexico city .