A reader in Maryland cited the below report, then made an excellent comment, I thought:

Thanks to two Maryland Delegates, passage of a same-sex marriage bill no longer looks as certain as it did.
Democrats Tiffany Alston of Prince George’s County and Jill Carter of Baltimore are withholding their votes in the House Judiciary Committee until school funds are restored in Governor Martin O’Malley’s budget.
Without their votes, there aren’t enough to advance the bill.
House Speaker Michael Busch met privately with Alston and Carter for 90-minutes, and said afterward that he won’t trade budget requests for gay-marriage votes.

Our reader remarked, “Yeah, nothing like horse-trading a ‘civil right.’” Perfect.