Complex sentence: In her 2007 election, Tsongas campaigned on setting a timetable to end the Iraq War; and her first bill introduced in Congress, which died in committee, aimed to implement a timetable for withdrawal from Iraq.
Split into simpler sentences: In her 2007 election, she campaigned on setting a timetable to end the Iraq War. The first bill she introduced in Congress, which died in committee, aimed to implement a timetable for withdrawal from Iraq.