Simplify the following text for a Grade 10 native English-speaking person.
Original: In the aftermath of the Labor loss at the October 2004 election , it was speculated that Gillard might challenge Jenny Macklin for the deputy leadership , but she did not do so .
Simplified: After the Labor loss at the October 2004 election , some people thought that Gillard might challenge Jenny Macklin for the deputy leadership , but she did not do so .