set font size of edge labels

stackexchange_test.tex

@@ -10,7 +10,8 @@
     shorten > = 3pt,
     node distance = 4cm and 4cm,
     el/.style = {inner sep=2pt, align=left, sloped},
-    every label/.append style = {font=\tiny}
+    every label/.append style = {font=\tiny},
+    every edge/.append style = {font=\scriptsize} % edge labels
     ]
 \node (data) [state, label=left:{label:10}]  {Data};
 \node (q1) [state,right=of data]                      {$s_1$};
@@ -19,8 +20,7 @@
 \node (q3) [state,below=of data,
             label=left:{label:5}]                   {$s_3$};
 \path[->]
-    (data)  edge [in=150,out=90,loop]
-                node[el,above] {Runs and re-runs}   (data)
+    (data)  edge [in=150,out=90,loop] node[el,above] {Runs and re-runs}   (data)
     (data)  edge [bend right=10]  node[el,below]  {$a=1$}         (q1)
     (q1)  edge [bend right=10]  node[el,above]  {$a=0$}         (data)
     (q1)  edge [bend right=10]  node[el,below]  {$a=2$}         (q2)