Nearly six years ago, Texas voters approved Proposition 2 — a constitutional amendment banning both same-sex marriage and civil unions — by a three-fourths majority. But if the measure appeared on the ballot in 2012, it would be “favored to receive” a majority of only 52.5 percent, according to an analysis from The New York Times’ FiveThirtyEighty blog, by statistician Nate Silver.

Texas is one of only 15 states where bans on both same-sex marriage and civil unions would still be favored to pass in 2012, Silver concludes, and the measures would be “very likely” to pass in only two states — Alabama and Mississippi. But those numbers go up for a constitutional amendment banning only same-sex marriage and not civil unions — which would pass in Texas by an estimated majority of 59.5 percent.

Of course, the problem with Texas’ constitutional amendment is that it’s already on the books. To repeal it would require a two-thirds majority of the Legislature, in addition to a simple majority of voters. Which is why most believe same-sex relationships will be recognized here only after the U.S. Supreme Court declares the amendment unconstitutional.

In related news, Mark Reed-Walkup, who recently won the right to have his same-sex marriage published under Weddings in The Dallas Morning News, has launched a Twitter handle @tx4m, based on the hashtag used in New York leading up to last month’s marriage equality vote. Reed-Walkup has also launched a Facebook page called Texans for Marriage Equality.