No voting system is immune to tactical voting:
but the current Plurality Voting system *encourages* it. Voters are frequently faced with the wasted-vote dilemma, and often enough vote their true preference, split the vote, and cost the overall preferred candidate the election (e.g. Nader cost Gore the 2000 US presidential election).
Approval Voting is a good system theoretically, and its practical simplicity makes it the best system for our next step in the evolution of voting.
>It would be much better to draw the lines such that there are two or three winners for each district.
>If you did that than even first past the fence voting would be tolerable.
You would still have vote-splitting. How about a proportional system?