// first round
{
  'Abelt Dessler': 1,
  'Reinhard von Musel': 1,
  'Lex Luthor': 2,
  'Drake Luft': 2,
  'Brian J. Mason': 0,
  'Frank Underwood': 0
}
// second round
{
  'Abelt Dessler': 1,
  'Reinhard von Musel': 1,
  'Lex Luthor': 2,
  'Drake Luft': 2
}
// third round
{ 'Lex Luthor': 3, 'Drake Luft': 3 }

After the second round:

• the elimination of Abelt and Reinhard from the first voter puts Lex at the first place of the first voter → +1 for Lex;
• the elimination of Abelt and Reinhard from the fifth voter puts Drake at the first place of the fifth voter → +1 for Drake.

The third round is 3:3 Lex/Drake (Abelt and Reinhard are eliminated after the second round). Hence the undefined.

The second round is 3:3 (Lex/Drake). (Edit : Abelt and Reinhard are removed from all voters after the first round.

Edit 2 : Brian and Frank are removed after the first round. And the second round is also 2:2 (Lex/Drake).

Note to myself : don't reply in the evening.