Simplify the following text for a Grade 9 native English-speaking person.
Original: In 1945 , 23 Labor Co-operative MPs were elected and two had high office in the Labor government - Alexander and Alfred Barnes , who had been chair of the Party .
Simplified: In 1945 , 23 Labor Co-op MPs were elected and two had high office in the Labor government - Alexander and Alfred Barnes , who had been chair of the Party .