How to read dictionaries in python?

I have a file of name "input.txt". In this text file a lot of dictionaries are stored. I have to iterate through these dictionaries. How do read the file? Whenever I read the file using open(), file.read() it coverts the whole text into a string type. How to read this file as collection of dictionaries?

Contents of input.txt:

{"label":18,"words":["realclearpolitics","-","election","2016","-","2016","republican","presidential","nomination","polls","year","state"]}