aqa a level politics

Absolutely (I got an A). First, you need to nail the essay structure. The one I used was similar to PEE for my "chunky" paragraphs, where I made my argument, backed it up with an example, and then explained it all and commented. I would normally have a set point I wanted to get across and devote 2 "chunky" paragraphs to agree and 1 to disagree before outlining the points and the conclusions in my conclusion and making a direct decision.
For example, for a question on the effectiveness of the House of Lords, I would make 1 point for and 2 points against them before concluding that they were generally ineffective, or the other way around.
You need to be up to date on current affairs, read at least 2 articles a day, and come up with examples for common questions. (The more recent the better)
Once you have the structure nailed, you should practice chunky paragraphs on past papers, once confident, just go through making cohesive points, examples, and explanations.
Make sure you have an understanding of the functions and ideas of the systems in place.
Using past papers you can familiarise yourself with common questions and formats.
I would focus primarily on the Essays but the little questions are important too.
My old politics tutor has a podcast "The A Level Politics Show", give it a listen.
I'm generally centre-right, but I argued against my own beliefs. I.e don't be afraid to go against your political views if it's a lot easier to argue the other way.
Look intro "logical chains of reasoning".
TLDR, practice papers, take an interest and understand systems and concepts.
I studied Edexcel but this method is transferrable.
Using this revision style I went from B's and C's in Politics A Level and C's and D's in Economics A Level to A's in both.
Spending time is most important, but leveraging it well is also very important.