Sort database query by column and then randomly

Let's say you have a model for Items with an attribute of Votes. Here might be some sample data:

Item, Votes
-----------
Red     4
Blue    5
Black   5   
Green   4
Cyan    5
Yellow  4
Orange  4

I want a scope that first sorts it by Votes:

Item, Votes
-----------
Orange  4
Green   4
Yellow  4
Red     4
Blue    5
Black   5   
Cyan    5

And then randomizes it within each vote cohort:

Item, Votes
-----------
Green   4
Red     4
Orange  4
Yellow  4
Black   5   
Blue    5
Cyan    5

And then limits it to the first two results.

I've tried this:

scope :options, -> { order('random()').order("votes asc").limit 2 }

and this:

scope :options, -> { order("votes asc").order('random()').limit 2 }

But neither works as expected. The first version seems completely random and the second version is not random at all.