Maggie Gallagher

Just how bad a blunder was President Obama's forced gay marriage endorsement?

Item: Manny Pacquiao, the world's greatest boxer, just came out against gay marriage. He now faces a nasty public campaign to vilify him, including false claims he advocated violence against gay people -- something both Pacquiao and the reporter who interviewed him deny.

A shopping mall owner in Los Angeles has just banned Manny Pacquiao: "He is not welcome at The Grove. ... The Grove is a gathering place for all Angelinos and not a place for intolerance."

Pacquiao is Filipino and a beloved icon to the Latino community and its many boxing fans, among others. How will Hispanic voters respond to the smearing of a popular sports hero as a bigot because he disagrees with Obama on marriage?

Item: Tomorrow in Memphis, a group of major civil rights leaders who marched with Martin Luther King Jr. will meet to release a statement pushing back against Obama's description of gay marriage as a civil right.

"We will be spending the next weeks and months visiting black churches, asking for support from pastors and their flocks. ... We ask President Obama to stand with the black church, on the word of God and evolve again back to the common-sense Biblical view that marriage is the union of husband and wife," said the Rev. William Owens, who marched with King and helped organize the civil rights movement in Nashville.

Item: Today, a Rasmussen poll in North Carolina shows Romney rocketing to the lead over Obama, 51 percent to 43 percent, which is a complete reversal from the last poll that had Obama and Romney statistically tied at 44 percent to 46 percent.

Obama carried North Carolina in 2008 by just 14,000 votes by earning 95 percent of the black vote there.

The sudden drop in Obama's standing in North Carolina is just one of many evidences that Obama made a serious error endorsing gay marriage.

The polling on gay marriage is now wildly off the mark, as even Democratic polling firm PPP admitted on Twitter the night the people of North Carolina rejected gay marriage 61 to 39 percent:

"Hate to say it, but I don't believe polls showing majority support for gay marriage nationally. Any time there's a vote it doesn't back it up."

Polls are just static snapshots. Obama's gay marriage endorsement changed the political dynamic in ways that will hurt him in at least three ways:

1. Obama consolidated Mitt Romney's base.

Maggie Gallagher

Maggie Gallagher is a nationally syndicated columnist, a leading voice in the new marriage movement and co-author of The Case for Marriage: Why Married People Are Happier, Healthier, and Better Off Financially.