Complex sentence: The Democratic Party contested the resultant 2003 parliamentary election as the head of its own coalition list, and Čomić received the sixth position; the list won thirty-seven mandates, and she was subsequently confirmed as part of the party's parliamentary delegation.
Split into simpler sentences: The Democratic Party contested the 2003 parliamentary election on its own (in alliance with some smaller parties), and Čomić received the sixth position on its list. The list won thirty-seven mandates, and she was subsequently confirmed as part of the Democratic Party's parliamentary delegation.