Complex sentence: Although, the scandal about the black campaign, didn't undermined the achievements of Lagunes who after the election, when Peña Nieto was declared president elected, was officially named head of the newly created National Digital Strategy Coordination at Mexican presidency.
Split into simpler sentences: Although, the scandal about the black campaign, didn't undermined the achievements of Lagunes. Who after the election, when Peña Nieto was declared president elected, was officially named head of the newly created National Digital Strategy Coordination at Mexican presidency.