Some common functions of political parties include widening policies favorable to their interests or the groups that sustain them, and organize and influence voters to elect their candidates to office. Find out more details on http://edhelper.com/ReadingComprehension_34_27.html.
To drive 300 million otherwise fine Americans crazy with goofy t.v. spots for at least two years before the election. To give Saturday night live great material for their show; by just being loony tunes politicians. And to teach us thankfulness, not for regular, everyday stuff, but thankful the election is over and be can go back to normal (HA! good luck) Americans...;-)