(Part 4) The year-long Major Panel study encompasses 4 interviews designated P1, P2, P3, and P4, which together constitute an independent cross-section and three waves of reinterviews.

- Interview P1 (wave 1) January 22 - February 25; personal interview; 1008 completed cases.

- Interview P2 (wave 2) June 4 - July 13; personal reinterview; 843 completed cases.

- Interview P3 (wave 3) September 2 - October 1; personal reinterview; 769 completed cases.

- Interview P4 (wave 4) November 5 - November 25; telephone reinterview; 764 completed cases. Post-election re-interview (P4) was brief and by phone. Timing of waves corresponds to events in the election year cycle.

[Note: An additional "Minor Panel" consisting of interviews in April with a post-election telephone re-interview is available only in the 1980 Integrated File (7763 Part 3)].

Development of attitudes and evaluations of candidates during a Presidential election campaign

STUDY DESIGN HIGHLIGHTS:
The year-long Major Panel study encompasses 4 interviews designated P1, P2, P3, and P4, which together constitute an independent cross-section and three waves of reinterviews.

• Interview P1 (wave 1) January 22 - February 25; personal interview; 1008 completed cases.
• Interview P2 (wave 2) June 4 - July 13; personal reinterview; 843 completed cases.
• Interview P3 (wave 3) September 2 - October 1; personal reinterview; 769 completed cases.
• Interview P4 (wave 4) November 5 - November 25; telephone reinterview; 764 completed cases.

Post-election re-interview (P4) was brief and by phone. Timing of waves corresponds to events in the election year cycle. [Note: An additional "Minor Panel" consisting of interviews in April with a post-election telephone re-interview is available only in the 1980 Integrated File (7763 Part 3)].