Ben’s Guide to Government for Kids  provides information and activities designed for educators, parents, and students in K-12 to help teach about our government and how it works. It is an educational site put on by the Government Printing Office, named in honor of Benjamin Franklin.
Election Lapbook 
Get everything you need from Homeschool Share  for making a nice-looking, informative lapbook about Elections. You get nice printables of the Electoral College map, information on how to register, etc… very nice!
The Constitution for Kids  gives a brief explanation of how the Constitution is the framing document of our country. There are 3 different levels of information and activities: ages K-3 , ages 4-7 , and ages 8-12 . While this website is lacking in bells and whistles, I found it to have very pertinent links for a student who is doing serious study of the Constitution and why it matters to each and every American.
Kids in the House  is designed to give children an idea of what the Legislative Branch of government is all about. There is also a section of teaching resources  for your lessons. It’s not quite as entertaining as School House Rock , but you could always add that on a rainy day!
The Oklahoma Homeschool  website has several unit study plans available to homeschool families. One of them is a 12-week study of American Government . The President & Elections lesson plan lists the current president as George Bush, so you will want to change that part of the lesson plan to make it accurate and current. There are many, many ideas you can use from the lesson pages as independent lessons if you don’t want to make a unit study of this topic.
Visit National Mock Election  and see the vast collection of information on the voting process, why it matters to the future of our country, and how to get involved. A mock election is held and you are one of the candidates! There is an interactive game, The Road to the Capitol , that even I enjoyed playing. I would say that it’s for upper elementary grades, but there’s nothing stopping you from playing along with your younger students in a campaign against Roberta Glass. “Wealthy businesswoman, Roberta Glass, has a heart of stone. She is running for a seat in the U.S. Congress, so she can keep kids away from movies, music, books, and video games that aren’t “approved” by the government.”
And a couple of my favorite videos from Schoolhouse Rock! 🙂
Schoolhouse Rock – Electoral College
Schoolhouse Rock – Three Branches Of Government