I have a question.
I have a ark wallet that in voting, and then if i add ark coin in my in voting wallet , this additional ark coin is automatically voting??

Yes. The amount of ARK you're voting automatically adjusts when you remove or add ARK to that wallet.
And the amazing thing with this is that your forged coins
(forged coins = gained through voting) will also count toward your next forging. So if you choose a delegate who pays daily (like ArkLand), the amount you get will increase every day. Ofcourse that's only important if you have a lot of ARK, otherwise the difference is small and unnoticeable.
Best regards,
Mr. Obvious
Thank you! great advice. Is there a list or a site to compare ark delegates? Is better to split ark wallet so that I can vote more delegates?