The Note's Must-Reads are a round-up of today's political headlines and stories from ABC News and the top U.S. newspapers. Posted Monday through Friday right here at www.abcnews.com

Compiled by ABC News' Jayce Henderson, Carrie Halperin, and Ben Waldron

PRESIDENT OBAMA: ABC News' Rick Klein: " Obama: 'I Think Same-Sex Couple Should Be Able to Get Married" President Obama today announced that he now supports same-sex marriage, reversing his longstanding opposition amid growing pressure from the Democratic base and even his own vice president. LINK

ABC News' Amy Walter: " Obama's Support for Gay Marriage: Political Impact" So what does President Obama's support for gay marriage mean for 2012? Via email, I surveyed a gaggle of smart pollsters- Democrat and Republican - and found the following: LINK

The New York Times' Adam Nagourney: " A Watershed Move, Both Risky and Inevitable" President Obama's endorsement of gay marriage on Wednesday was by any measure a watershed. A sitting United States president took sides in what many people consider the last civil rights movement, providing the most powerful evidence to date of how rapidly views are moving on an issue that was politically toxic just five years ago. LINK

The Washington Time's Dave Boyer: " Obama's week: Bad to worse" Since kicking off his re-election campaign last weekend, President Obama has endured a rapid series of stumbles, including a debate on gay marriage initiated by his vice president and an embarrassingly close primary victory over a prison inmate. LINK

The Los Angeles Times' Joseph Tanfani, Matea Gold and Melanie Mason: " Gay donors thrilled by Obama gay marriage stance" President Obama's decision to embrace gay marriage may add a political complication to his reelection bid, but it is also unleashing a wave of new financial support from gay and lesbian donors who were already major backers of his candidacy. LINK

The Boston Globe's Noah Bierman: " Brown, Warren react to Obama's support of gay marriage" US Senator Scott Brown, an opponent of gay marriage when he was in the Massachusetts Legislature, said in a statement today that gay marriage is "settled law" in Massachusetts and should be decided by the states instead of the federal government. LINK

Politico's Glen Thrush and Jennifer Epstein: "W.H.: Joe Biden forced Obama's hand on gay marriage" For President Barack Obama and his team, the decision to back gay marriage came down to a choice between two unpalatable alternatives: Support it and brave the backlash in battleground states where the issue could be a liability - or keep silent and be accused by allies of gutlessness and putting politics over principle. LINK

Wall Street Journal's Laura Meckler and Geoffrey Fowler: " President Plants His Feet on Rapidly Shifting Terrain" Americans and their institutions have rapidly transformed their views on gay marriage in recent years. But some 40% of the country remains opposed, and voters in state after state have banned such unions. LINK

MITT ROMNEY: The Washington Post's Felicia Sonmez: " As Obama backs gay marriage, Romney maintains opposition, calls it a 'tender' issue" Down the road from the Oklahoma State Capitol, where a towering oil derrick on the grounds is a tangible reminder of the industry's clout in the state, Mitt Romney took the podium at the state GOP headquarters Wednesday afternoon intent on hammering President Obama on his handling of the economy and domestic energy production. LINK

Bloomberg's John McCormick: " Romney Says Obama Takes Undue Credit for Oil-Output Gains" Mitt Romney, campaigning amid oil rigs dotting the landscape in Colorado, said President Barack Obama's policies have hurt U.S. energy output and that regulation of hydraulic fracturing for natural gas should be left to states.  "The president tries to take credit for the fact that oil production is up," the former Massachusetts governor and presumptive Republican presidential nominee told supporters against the backdrop of an oil rig outside Fort Lupton. LINK

RON PAUL: USA Today's Catalina Camia: " Ron Paul adds delegates so he can change GOP agenda" Ron Paul says he's still on the hunt for GOP convention delegates to advance his political agenda of smaller government. LINK

ABC NEWS VIDEO: " Obama's Gay Marriage Support Reflects Nation" LINK

BOOKMARKS: The Note: LINK The Must-Reads Online: LINK Top Line Webcast (12noon EST M-F): LINK ABC News Politics: LINK The Political Punch (Jake Tapper): LINK George's Bottom Line (George Stephanopoulos): LINK Follow ABC News on Twitter: LINK ABC News Mobile: LINK ABC News app on your iPhone/iPod Touch/iPad: LINK