Arduino's Serial Monitor Showing Constant Value
In your initialisation where you declare each variable and 'connecting' them to a pin you make a mistake. Now you say that senRead is a digital pin instead of a analog pin. Change the value to A0 so you will get 

int senRead = A0;

Also in your void Setup() you forget to declare your analog pin as an input. Add a pinMode command that sets senRead as an input. 

If this doesn't fix your problem then it is probably hardware related. Check the connections on your breadboard will most of the times solve alot of problems.