if its on the same chain it probably will have the same effect on the same account yes, its in the system, votes have weight and they can be negative, a negative vote will reflect on your account, no matter what dapp unless you use different accounts for different dapps

you can see a lot if you use firefox then take your account name and url like

https://steemit.com/@whipped-cream then add . json to it

you can do the same for any post , it will show you exactly who voted at what weight and positive or negative