The leftist Washington post explains.

Excerpt:

President Barack Obama personally intervened to order Democrats to change language in their party platform to add a mention of God and declare that Jerusalem is the capital of Israel, campaign officials said Wednesday.

Scrambling to end the furor, Democrats abruptly changed the platform early Wednesday evening to reinstate language from the 2008 platform that said “we need a government that stands up for the hopes, values and interests of working people and gives everyone willing to work hard the chance to make the most of their God-given potential.” Mitt Romney and other Republicans had seized on the omission to criticize the Democrats.

Democrats also restored 2008 language on Jerusalem, declaring the city “is and will remain the capital of Israel. The parties have agreed that Jerusalem is a matter for final status negotiations. It should remain an undivided city accessible to people of all faiths.”

[…]The platform changes did not sit well with some Democratic delegates gathered in Charlotte, N.C., for the party’s three-day convention. Many in the audience booed after the convention chairman, Los Angeles Mayor Antonio Villaraigosa, ruled that the amendments had been approved despite the fact that a large group of delegates had objected. He called for a vote three times before ruling.

The revisions came as Obama struggles to win support from white working-class voters, many of whom have strong religious beliefs, and as Republicans try to woo Jewish voters and contributors away from the Democratic Party. Republicans claimed the platform omissions suggested Obama was weak in his defense of Israel and out of touch with mainstream Americans.

Democrats support abortion and gay marriage. And they haven’t done enough to protect Israel from Iran. But they have to pretend that they are moral people and good allies of Israel in order to get elected, even if their hearts are elsewhere. I understand that.