Yes. As far as I'm aware (not a tax expert) Revenue doesn't have to change your tax credits or the way in which you are assessed, but if you request it, they generally do. However you'll probably have to wait and do a tax return next year. In that make sure you request that for 2008 you wish for your husband to be the principal earner. As Clubman says, contact them and they'll talk you through it. You will not however be using your the full entitlement to the lower rate of tax between you. If your husband becomes the principal earner you can earn earn up to approx. €26k at the lower rate and your husband can earn approx. €44k at the lower rate. However, given that you are only going to earn €19k this year, unfortunately you can't give your husband the credit of extra €7k at the lower rate.
For example a married couple earning more than the standard rate cut off each will get approx. €70k at the lower rate, whereas in your case you'll get approx. €64k at the lower rate and your husband will pay high rate of tax on approx. €4K.