I can say whatever I want.
I have freedom of speech.
I paid for this freedom of speech at $1.00 per word.
Hahaha, just kidding man.
Its just a poll. Vote if you'd like or don't, it's all good. 
That'll be $37.00 plus additional charges of $0.50 per punctuation, $0.75 per conjunction, and $2.00 per emoticons. Oh and the "hahaha" will cost you an additional $1.00 per "Ha"

I voted for the pump shotgun simply because in Hawaii our homes are built in close proximity to one another. The risk of over-penetration in a home defense situation is significantly greater than on the mainland. You could shoot somebody with a pistol or rifle and have the round go through him, your wall, and then your neighbors wall because your neighbor's house is only 20ft away from yours. Shotgun rounds will lose velocity much quicker than one solitary bullet, reducing the risk significantly. And of course the overall effectiveness of shotgun rounds at close range, not to mention the multitude of differenttypes of ammunition you can shoot all through one shotgun makes it ideal for home defense.
A semi-auto shotgun would probably be more effective because of sheer firepower, but it may screw you in the court case to follow. All the prosecution has to do is show one of those youtube videos of someone going off with a Saiga 12 or AA12, and they'll say "See! Look what this weapon is capable of and what this person used on my client! He used extreme and excessive force!" Also police standard issue shotgun (as far as I know) is a pump and not a semi-auto, so the "I only used what the LEO's use" will not work with a semi-auto shotgun.
Either way, any gun for home defense is better than no gun at all.