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, Amanda VanAllen, and Carrie Halperin

MITT ROMNEY: The Wall Street Journal's Danny Yadron and Nathan Hodge: " Path for Romney Getting Clearer" The fight for the Republican presidential nomination appeared closer to a conclusion as Newt Gingrich on Sunday all but conceded to Mitt Romney, and Rick Santorum continued facing a money shortage in his home state of Pennsylvania, where he has two weeks to make a last stand before the primary. LINK

The New York Daily News' Jonathan Lemire: " Florida Sen. Marco Rubio may be right fit for Mitt Romney's vice presidential nominee"  With the Republican presidential nomination nearly in his grasp, Mitt Romney's No. 1 job may now be to find his No. 2. As the former Massachusetts governor begins to pivot toward a general election showdown with President Obama, his team has quietly begun considering potential vice-presidential candidates. LINK

NEWT GINGRICH: The Hill's Vicki Needham: " Gingrich says Romney 'most likely' nominee, would back him in Nov." GOP presidential hopeful Newt Gingrich says he will support front-runner Mitt Romney if he garners the delegates needed for the nomination.  "I think you have to be realistic, given the size of his organization, given the number of primaries he's won, he is far and away the most likely Republican nominee," Gingrich said this morning on Fox News Sunday. LINK

The Boston Globe: " Newt Gingrich expects Mitt Romney to win" Newt Gingrich once led his rivals for the Republican presidential nomination in the polls. Now, he is millions in debt and describing Mitt Romney as "far and away the most likely" GOP nominee. LINK

RICK SANTORUM: ABC News' Rick Klein: "' World News' Political Insights: Rick Santorum's Closing Window for Graceful Exit" Leave it to Newt Gingrich, back in his role as strategist rather than candidate, to state the obvious reality of Mitt Romney's commanding position in the Republican presidential race. "You have to be realistic," Gingrich said today on "Fox News Sunday. "He is far and away the most likely Republican nominee." LINK

Politico's Maggie Haberman: " Santorum adviser: We'll 'respect it' if it's clear someone will get 1,144" Rick Santorum's top adviser, John Brabender, sets the bar for going forward in slightly different terms with the WSJ: "Mr. Santorum's campaign had just $1.2 million at the end of March, according to Mr. Santorum's senior campaign strategist, John Brabender. The Santorum campaign plans to air TV ads in Pennsylvania, but it will be a much smaller advertising investment than Mr. Romney's, Mr. Brabender said." LINK

The Los Angeles Times' Paul West: " It's do or die for Rick Santorum in Pennsylvania" Rick Santorum is back on familiar ground, seeking redemption and a lifeline for his presidential candidacy in the state that rejected him almost six years ago. LINK

SUPER PAC: The New York Times' Jim Rutenberg and Jeff Zeleny: " 'Super Pac,' Eyeing General Elections, Aims Blitz at Obama" American Crossroads, the biggest of the Republican "super PACs," is planning to begin its first major anti-Obama advertising blitz of the year, a moment the Obama re-election campaign has been girding for and another sign that the general election is starting in earnest. LINK

OTHER: The Washington Post's Chris Cillizza: " 'Big' is bad for politicians this election year as populist sentiment prevails" Big is out. Big Oil. Big Government. Big Media. Put "Big" (the capitalization is key) in front of just about anything these days in politics and you can be certain that voters aren't going to like it. LINK

The Washington Times' Stephen Dinan: " Eagerness seen as a vice in presidential veepstakes" While Mitt Romney finally looks to have the Republican nomination within his grasp, the jockeying among the wannabes for the No. 2 spot on the GOP ticket is only now ramping up. LINK

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