I said this on a similar thread last night:
There have been a lot of recent elections where a 3rd party "Libertarian" siphoned votes from Republicans, and unlikely democRATs were elected. Something is going on... I don't believe all of these Libertarians are for real.
The 2012 Mia Love (R) Congressional race in Utah is a prime example. In conservative Utah, Mia should have trounced her democRAT opponent. Some stupid "Libertarian" got in the way, which created a 3-way race, and now the democRAT holds that seat.
If pure democratic expression were the goal, of course, a runoff would occur. It's a good solution to the situation of a splintered vote. Too bad. The winner should probably be required to garner over 50%.