Next countries to legalize Gay Marriage? (after Colombia)

[parochial boy]

First Tier (pretty likely within the next one or two years, or otherwise "inevitable"):

Rest of Mexico, Taiwan, Australia, Switzerland, Costa Rica, Faroe Islands,

Second Tier (by 2020, I'd be surprised if the dominos hadn't fallen)

Greece, Italy, N. Ireland, Austria, Germany, Nepal, Malta, Costa Rica, Estonia

Third Tier: Wild-cards

Japan, S. Korea, Albania, Thailand, Israel (civil marriage would have to be enacted first), Vietnam, Ecuador, Venezuela, Chile (!), Bolivia (would have to be done via constitution though, so rather unlikely), Ecuador (same), Rest of EU, Cuba

Why Switzerland?

70% support according to a recent poll

Even UDC and PDC voters are in favour by wide margins.

I'm not aware that anyone is gathering signatures for a referendum though, so unlikely that it happens in the the next year or two.