diff --git a/lib/matplotlib/tests/baseline_images/test_widgets/check_bunch_of_radio_buttons.png b/lib/matplotlib/tests/baseline_images/test_widgets/check_bunch_of_radio_buttons.png
new file mode 100644
index 000000000000..e071860dfde6
Binary files /dev/null and b/lib/matplotlib/tests/baseline_images/test_widgets/check_bunch_of_radio_buttons.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_widgets/check_radio_buttons.png b/lib/matplotlib/tests/baseline_images/test_widgets/check_radio_buttons.png
index c1ed74347bfe..e96085d9bffd 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_widgets/check_radio_buttons.png and b/lib/matplotlib/tests/baseline_images/test_widgets/check_radio_buttons.png differ
diff --git a/lib/matplotlib/tests/test_widgets.py b/lib/matplotlib/tests/test_widgets.py
index afd50ef24e3c..6eecb4b0c540 100644
--- a/lib/matplotlib/tests/test_widgets.py
+++ b/lib/matplotlib/tests/test_widgets.py
@@ -90,8 +90,9 @@ def onselect(epress, erelease):
 
     if kwargs.get('drawtype', None) not in ['line', 'none']:
         assert_allclose(tool.geometry,
-            [[100., 100, 199, 199, 100], [100, 199, 199, 100, 100]],
-            err_msg=tool.geometry)
+                        [[100., 100, 199, 199, 100],
+                         [100, 199, 199, 100, 100]],
+                        err_msg=tool.geometry)
 
     assert ax._got_onselect
 
@@ -118,40 +119,41 @@ def onselect(epress, erelease):
 
     # drag the rectangle
     do_event(tool, 'press', xdata=10, ydata=10, button=1,
-                    key=' ')
+             key=' ')
+
     do_event(tool, 'onmove', xdata=30, ydata=30, button=1)
     do_event(tool, 'release', xdata=30, ydata=30, button=1)
     assert tool.extents == (120, 170, 120, 170)
 
     # create from center
     do_event(tool, 'on_key_press', xdata=100, ydata=100, button=1,
-                    key='control')
+             key='control')
     do_event(tool, 'press', xdata=100, ydata=100, button=1)
     do_event(tool, 'onmove', xdata=125, ydata=125, button=1)
     do_event(tool, 'release', xdata=125, ydata=125, button=1)
     do_event(tool, 'on_key_release', xdata=100, ydata=100, button=1,
-                    key='control')
+             key='control')
     assert tool.extents == (75, 125, 75, 125)
 
     # create a square
     do_event(tool, 'on_key_press', xdata=10, ydata=10, button=1,
-                    key='shift')
+             key='shift')
     do_event(tool, 'press', xdata=10, ydata=10, button=1)
     do_event(tool, 'onmove', xdata=35, ydata=30, button=1)
     do_event(tool, 'release', xdata=35, ydata=30, button=1)
     do_event(tool, 'on_key_release', xdata=10, ydata=10, button=1,
-                    key='shift')
+             key='shift')
     extents = [int(e) for e in tool.extents]
     assert extents == [10, 35, 10, 34]
 
     # create a square from center
     do_event(tool, 'on_key_press', xdata=100, ydata=100, button=1,
-                      key='ctrl+shift')
+             key='ctrl+shift')
     do_event(tool, 'press', xdata=100, ydata=100, button=1)
     do_event(tool, 'onmove', xdata=125, ydata=130, button=1)
     do_event(tool, 'release', xdata=125, ydata=130, button=1)
     do_event(tool, 'on_key_release', xdata=100, ydata=100, button=1,
-                      key='ctrl+shift')
+             key='ctrl+shift')
     extents = [int(e) for e in tool.extents]
     assert extents == [70, 129, 70, 130]
 
@@ -261,7 +263,7 @@ def test_CheckButtons():
 
 
 @image_comparison(baseline_images=['check_radio_buttons'], extensions=['png'],
-                  style='default')
+                  style='mpl20', remove_text=True)
 def test_check_radio_buttons_image():
     get_ax()
     plt.subplots_adjust(left=0.3)
@@ -272,6 +274,15 @@ def test_check_radio_buttons_image():
                          (False, True, True))
 
 
+@image_comparison(baseline_images=['check_bunch_of_radio_buttons'],
+                  style='mpl20', extensions=['png'], remove_text=True)
+def test_check_bunch_of_radio_buttons():
+    rax = plt.axes([0.05, 0.1, 0.15, 0.7])
+    widgets.RadioButtons(rax, ('B1', 'B2', 'B3', 'B4', 'B5', 'B6',
+                               'B7', 'B8', 'B9', 'B10', 'B11', 'B12',
+                               'B13', 'B14', 'B15'))
+
+
 def test_slider_slidermin_slidermax_invalid():
     fig, ax = plt.subplots()
     # test min/max with floats
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
index ca6f544ada4d..c785a61eb4b5 100644
--- a/lib/matplotlib/widgets.py
+++ b/lib/matplotlib/widgets.py
@@ -986,6 +986,13 @@ def __init__(self, ax, labels, active=0, activecolor='blue'):
         cnt = 0
         axcolor = ax.get_facecolor()
 
+        # scale the radius of the circle with the spacing between each one
+        circle_radius = (dy / 2) - 0.01
+
+        # defaul to hard-coded value if the radius becomes too large
+        if(circle_radius > 0.05):
+            circle_radius = 0.05
+
         self.labels = []
         self.circles = []
         for y, label in zip(ys, labels):
@@ -999,7 +1006,7 @@ def __init__(self, ax, labels, active=0, activecolor='blue'):
             else:
                 facecolor = axcolor
 
-            p = Circle(xy=(0.15, y), radius=0.05, edgecolor='black',
+            p = Circle(xy=(0.15, y), radius=circle_radius, edgecolor='black',
                        facecolor=facecolor, transform=ax.transAxes)
 
             self.labels.append(t)