The Baltimore Sun's Maryland Politics:

The National Organization for Marriage today pledged at least $1 million to help defeat Republicans who favor same-sex marriage and assist the campaigns of Democrats who oppose it.

The announcement came as the Maryland House of Delegates today moved the legislation a step closer to a final vote. More debate is planned for Friday, and it is unclear whether the marriage bill has the 71 votes needed for passage.

... Brown said the National Organization for Marriage has been working behind the scenes in Maryland, contacting more than 500,000 voters through the mail or phone calls. The group urges those voters to call their legislators.

According to lawmakers, they've been doing so in large numbers. Several delegates said during today's floor debate that they had never heard from so many people on a single issue.