diff --git a/app/controllers/user_admin_controller.rb b/app/controllers/user_admin_controller.rb
--- a/app/controllers/user_admin_controller.rb
+++ b/app/controllers/user_admin_controller.rb
@@ -157,17 +157,27 @@
   # contest management
 
   def contests
-    if params[:id]!='none'
-      @contest = Contest.find(params[:id])
-    else
-      @contest = nil
+    @contest, @users = find_contest_and_user_from_contest_id(params[:id])
+    @contests = Contest.enabled
+  end
+
+  def assign_from_list
+    contest_id = params[:users_contest_id]
+    org_contest, users = find_contest_and_user_from_contest_id(contest_id)
+    contest = Contest.find(params[:new_contest][:id])
+    if !contest
+      flash[:notice] = 'Error: no contest'
+      redirect_to :action => 'contests', :id =>contest_id
     end
-    if @contest
-      @users = @contest.users
-    else
-      @users = User.find_users_with_no_contest
+
+    note = []
+    users.each do |u|
+      u.contests = [contest]
+      note << u.login
     end
-    @contests = Contest.enabled
+    flash[:notice] = 'User(s) ' + note.join(', ') + 
+      " were successfully reassigned to #{contest.title}." 
+    redirect_to :action => 'contests', :id =>contest.id
   end
 
   def add_to_contest
@@ -379,4 +389,18 @@
     logger.info body
     send_mail(user.email, subject, body)
   end
+
+  def find_contest_and_user_from_contest_id(id)
+    if id!='none'
+      @contest = Contest.find(id)
+    else
+      @contest = nil
+    end
+    if @contest
+      @users = @contest.users
+    else
+      @users = User.find_users_with_no_contest
+    end
+    return [@contest, @users]
+  end
 end
diff --git a/app/views/user_admin/contests.html.erb b/app/views/user_admin/contests.html.erb
--- a/app/views/user_admin/contests.html.erb
+++ b/app/views/user_admin/contests.html.erb
@@ -14,6 +14,13 @@
     <% end %>
     <%= link_to "[no contest]", :action => 'contests', :id => 'none' %>
   <% end %>
+  <br/>
+  <% form_tag :action => 'assign_from_list' do %>
+    <%= hidden_field_tag 'users_contest_id', (@contest ? @contest.id : 'none') %>
+    Assign all to 
+    <%= select("new_contest","id",Contest.all.collect {|c| [c.title, c.id]}) %>
+    <%= submit_tag "Assign", :confirm => 'Are you sure?' %>
+  <% end %>
 </div>
 
 <table class="info">
@@ -57,9 +64,3 @@
   </tr>
 <% end %>
 </table>
-
-
-<br />
-
-<%= link_to 'New user', :action => 'new' %>
-<%= link_to 'New list of users', :action => 'new_list' %>