I had a will before I got married. Is it still legal or did getting married void it?

In most states, one spouse cannot disinherit the other. Through "elective share" statutes, a surving spouse is entitled to a portion ot their deceased spouse's estate. This is true no matter what their Will may specify. In NY, the surviving spouse is given the right to take the greater of 1/3 or $50,000 from the deceased spouse’s “net estate” which is the probate estate plus “testamentary substitutes”. These include assets passing under a Will plus jointly owned property and bank accounts, payable on death accounts (POD), assets held in a living Trust, most assets with beneficiary designations, and gifts made by the decedent within 1 year of death. The surviving spouse also has rights to the decedent's car, CD's and personal items up to the statutory allowance. The intent of the law is to allow the surviving spouse access to their elective share even if the deceased spouse attempted to use techniques to avoid probate. To be certain of all of this, you should consult directly with a local probate attorney; they can advise you further based on your specific estate.

Legally, a marriage does not void a will. However, it can make a will no longer appropriate to your needs. If your concern or desire is primarly to disinherit your spouse (to make sure he is excluded), then for that, there is no reason to change your will: your state (New York) does not allow you to disinherit your spouse. Rather, no matter what your will says, your state gives your spouse an "elective share", or the right to take a portion of your estate. You can obviously give your spouse nothing extra, or no more than state law gives him, but you can't prevent him from getting the state-mandated minimum.