Delhi

According to the previous year's records, your chances of getting IHM Pusa is very much less, but I am confident, you will get admission in all the colleges ranking just below IHM-Pusa.

Here are some of the options:
Plutus Academy
Mahindras Institute
Career Power
Success Center
Vidya Guru Institute
Atulya Institute
IMS India
Vidya Guru
Bank Power
Tara Institute
CAAS institute
Paramount Coaching Center Pvt. Ltd.

GGSIPU 2018 College Predictor
Use your GGSIPU 2018 rank to see where you can get admission at the link provided below:
See the courses, colleges & rounds you may crack.
The result is based on admissions data of GGSIPU 2017.
Get resources, insights on colleges & courses:
https://www.shiksha.com/b-tech/resources/ggsipu-college-predictor

The faculty members of the college are very helpful in nature. Teachers help you to solve every problem. This college is good for to pursue Political Science.
Best of luck for your graduation.

GGSIPU 2018 College Predictor.
Use your GGSIPU 2018 rank to see where you can get admission in the link provided below:
See the courses, colleges & rounds you may crack.
The result is based on admissions data of GGSIPU 2017.
Get resources, insights on colleges & courses:
https://www.shiksha.com/b-tech/resources/ggsipu-college-predictor

Surely, you can get a good college. Try for Maharaja Agrasen or Surajmal College.

I think DTU is better option but if seen according to priority list which is best
NIT Durgapur, DTU, NIT Hamirpur & Jalandhar.
In NIT, Durgapur last year closing rank was 18112 so there is less chances but if take part in JOSSA counselling carefully then there will be a chances in Durgapur otherwise DTU is better option.

I checked last year's cut-off and could not see your rank. Do check it this year to know any change in the cut off.

According to last year's cut-off, you can get admission in 2nd round of counselling for 2nd shift.
It may change this year. So, keep a check on IP's site for the cut-off release date.

Delhi Metropolitan Education is good but obviously not that good. It's rank is also a little down. I don't know much about it but all I know is I have never heard anything extraordinary about it. That's it. So it's your call!