I'm a US citizen who has been living abroad for several years. Can I still vote in US elections, and how do I register?

Yes, as a US citizen living abroad, you are eligible to vote in US federal elections. You can register to vote through the Federal Voting Assistance Program (FVAP) website

You will need to meet specific eligibility requirements, such as having been registered to vote in the past. You will also need to request an absentee ballot from your state's election office

Yes as long as you meet certain requirements