There does need to be sufficient measures in place to prevent election tampering, both from within and from without. Many of our electronic voting machines are vulnerable, and need to be updated and secured. Any politician caught and convicted of doing things like what Mike Harris' campaign did in North Carolina should be punished severely.
And beyond that, we need major electoral reform in this country in general. Gerrymandering, "first past the post" rules, and the Electoral College all result in grossly unrepresentative government. While there have been many solutions proposed, I think some form of ranked-choice voting would be best. Also, Election Day should be either moved to Saturday or extended to two or three days. Also, we should be extremely suspicious of anything that attempts to make voting more difficult.