DES MOINES, Iowa (AP) — National Review, a decades-old magazine of conservative commentaries, endorsed Mitt Romney for the GOP presidential nomination Tuesday, saying he's the Republican whose positions best appeal to social, national security and economic conservatives alike.

"For Republicans to have any chance of winning next year, they're going to need a candidate who can keep the conservative coalition together," said Rich Lowry, the magazine's editor. The endorsement will appear in an editorial in the magazine's last issue of the year, just three weeks before Iowa Republicans hold the lead-off caucuses in the nomination race.