This Way, You Fools!

[d-vils_wingman]

This is a card from Munchkin Cthulhu 4: Crazed Caverns.
I've run into problems with the understanding of this card. It reads, "Discard all Dungeons in play and draw two new ones. Each player puts one card from his hand face-down on the Dungeon of his choice. The Dungeon with the most Gold Pieces of Items stays in play; discard the other Dungeon. In case of a tie, both Dungeons stay in play. Cards used to vote are discarded".
During one play in particular, I Kicked down the Door and had to play this card. The first question regarding this is: Do the cards used to vote have to be Item cards? This concerned us because there were those of us that had no Items in our hand.
The second question is: What happens for players that refuse to vote? One opponent did not want to vote to change the dungeon which, incidentally, was an awesome card while the two replacements were more crippling.