Complex sentence: In the new timeline, John Hinckley, Jr. never tries to assasinate Ronald Reagan, and without the side effect of the attempted assasination making Americans think of him as a strongman, loses the election of 1984.
Split into simpler sentences: In the new timeline, John Hinckley, Jr. never tries to assasinate Ronald Reagan. Without the side effect of the attempted assasination making Americans think of him as a strongman, Reagan loses the election of 1984.