Robin Ficker, a Montgomery County Republican activist who ran a petition campaign to place term limits on the 2016 Montgomery ballot. (Jabin Botsford/The Washington Post)

Montgomery County real estate developers and builders put some late financial muscle behind the successful term limits ballot initiative, according to a post-election filing with the state.

The real estate sector kicked in about $21,000 of the $25,000 in contributions collected in late October and early November by Voters for Montgomery County Term Limits. The lopsided margin of passage for Question B (70 percent to 30 percent) strongly suggests that the cap of three consecutive terms for the county executive and members of the County Council was already a done deal for voters.

Major donors included Miller & Long D.C. construction executive Evan McMahon ($5,000); Minkoff Development Corp. vice president Bradley Chod; Coakley & Williams Construction ($2,500), and FP Corporate Services ($2,000), which is listed at the same Potomac address as Foulger-Pratt, a major developer and defendant in the county’s lawsuit against designers and builders of the Silver Spring Transit Center. Foulger-Pratt was general contractor on the project. Bryant Foulger, the firm’s managing principal, contributed $500 under his own name.

According to the filing, the term limits group spent $15,000 for online advertising and $7,000 for robocalls.

No On B, the committee that organized opposition to the ballot measure, had not filed its post-election report as of mid-afternoon Monday. It was due on Nov. 22.