2007 renegade starting issues

starting to have issues starting my renegade these days.
a while ago, the odd time when pushed the start button nothing would happen.
i would pull in the brake lever or maybe rock it a bit and would fire up.
this is now becoming a issue more often than not.
really have to pull the brake lever in hard, rock it, change gears etc then
it will make the connection and fire right up. thinking it is some type of a
electrical connection issue but have no idea where to even start ??
help please