Mexico City (CNN) -- The leader of Mexico's leftist Party of the Democratic Revolution, Andres Manuel Lopez Obrador, announced Tuesday that he has asked Mexico's Federal Election Institute for a recount of the ballots cast in Sunday's presidential election. 

Lopez Obrador's demand came the day after he said the vote had been "plagued by irregularities." 

Election authorities have projected Lopez Obrador as the runner-up in the vote. 

Mexico's presumed president-elect, Enrique Peña Nieto, said Monday it was time for his country to leave behind the political rancor of campaign season. 

Political tensions flare after Mexican presidential vote 

The Federal Election Institute, known by its Spanish acronym IFE, says it expects the final count results Sunday. That's when each of the approximately 143,000 polling stations are supposed to have finished counting votes and signed an "act" detailing the number of votes. 

Wednesday marks the beginning of the district count, in which each of the 300 electoral districts will scrutinize the acts. 

Ballots will be recounted in cases where: 

-- The difference between the first and second place candidate is 1% or less; 

-- The number of annulled votes is greater than the difference between the first and second place candidates. 

Ana Isabel Fuentes, international coordinator of information for IFE, said she expects the law to mandate recounts in 19 districts, representing about a third of the total ballots cast. 

Lopez Obrador must wait until Sunday to formally submit any application for a recount to the Federal Election Tribunal. Any candidate can challenge, but National Action Party candidate Josefina Vazquez Mota has already conceded. 
Who is Andres Manuel Lopez?
What did ask for?
of what?
When were they cast?
What type of election was it?
was he running in the election?
did he win?
When will the results be ready?
Who is anticipating the results
What else are they known by?
When does the district count start?
How many districts are there?
How many polling stations?
What percentage does the difference in votes need to be for a recount?
When can Obrador turn in his request for a recount?
Who will he give it to?
Who conceded the race?
What party is he with?
Who is Fuentes?
What does she anticipate?
The leader of Mexico's leftist Party
The leader of Mexico's leftist Party of the Democratic Revolution, Andres Manuel Lopez
a recount
he has asked Mexico's Federal Election Institute for a recount of the ballots cast in Sunday's presidential election
ballots cast
 a recount of the ballots cast in Sunday's presidential election.
Sunday
 ballots cast in Sunday's presidential election
presidential
presidential election.
yes
Election authorities have projected Lopez Obrador as the runner-up in the vote. 
no
Election authorities have projected Lopez Obrador as the runner-up in the vote
Sunday
t expects the final count results Sunday.
The Federal Election Insitute
The Federal Election Institute, known by its Spanish acronym IFE, says it expects the final count results Sunday
IFE
The Federal Election Institute, known by its Spanish acronym IFE
Wednesday
Wednesday marks the beginning of the district count
300
each of the 300 electoral districts 
143,000
the approximately 143,000 polling stations 
one or less
 The difference between the first and second place candidate is 1% or less;
Sunday
Lopez Obrador must wait until Sunday to formally submit any application for a recount 
the Federal Election Tribunal
submit any application for a recount to the Federal Election Tribunal
Josefina Vazquez Mota
Josefina Vazquez Mota has already conceded.
National Action Party
National Action Party candidate Josefina Vazquez
the international coordinator of information for IFE
Ana Isabel Fuentes, international coordinator of information for IFE
the law to mandate recounts
said she expects the law to mandate recounts in 19 districts