More from the letter, which was obtained by the Huffington Post:
Nevertheless, like you, I remain committed to pursuing the public option. While I believe that the legislation we are considering does much to provide affordable coverage to millions of Americans and curb insurance company abuses, I also believe that the public option would provide additional competition to make insurance even more affordable. As we have discussed, I will work to ensure that we are able to vote on the public option in the coming months.
Through a spokesman, Sanders said he appreciated the letter.
"I very much appreciate Majority Leader Reid's continuing support for a public option and I am grateful for his commitment to bring legislation before the full Senate within the next several months," he said. "It's imperative that we have a vote on this issue and I'm glad that is going to happen."
Earlier today, Rep. Stephen Lynch (D-MA) said that President Obama told him that he couldn't push for a public option this year, but might try next year.