Rep. Paul RyanPaul RyanIf Democrats want to take back the White House start now GOP grapples with how to handle town halls Leaked ObamaCare bill would defund Planned Parenthood MORE (R-Wis.) and former secretary of State Hillary ClintonHillary Rodham ClintonPerez to hit the Sunday shows following election victory Five takeaways from CPAC Clinton: Dems will be 'strong, unified' with Perez MORE (D) are the early favorites of Iowa voters among possible 2016 presidential candidates, according to a new Des Moines Register Iowa Poll.

Seventy-three percent of Republican Iowa adults viewed the Ryan very or mostly favorably, while 10 percent viewed the 2012 GOP vice presidential nominee very or mostly unfavorably.

Ryan last week reached a budget agreement with Sen. Patty Murray (D-Wash.) that, despite conservative criticism, passed the House in a 332-94 vote.

Former Gov. Mike Huckabee (Ark.) placed second among possible Republican candidates in the Iowa Poll.

The winner of the 2008 Iowa caucuses is conducting polling and gauging support for a possible 2016 presidential bid.

“I’m keeping the door open,” he told The New York Times last week. “I think right now the focus needs to be on 2014, but I’m mindful of the fact that there’s a real opportunity for me.”

Huckabee is followed by former Sen. Rick Santorum (Pa.), Gov. Rick Perry (Texas), former Gov. Jeb Bush (Fla.), Gov. Chris Christie (N.J.), Sen. Rand PaulRand PaulConquering Trump returns to conservative summit Rand Paul rejects label of 'Trump's most loyal stooge' GOP healthcare plans push health savings account expansion MORE (Ky.), Gov. Scott Walker (Wis.), Sen. Marco RubioMarco RubioAt CPAC, Trump lashes out at media Conquering Trump returns to conservative summit Rubio brushes off demonstrator asking about town halls MORE (Fla) and Sen. Ted CruzTed CruzBrietbart CEO reveals that Trump donors are part owners At CPAC, Trump lashes out at media Conquering Trump returns to conservative summit MORE (Texas).

Among Iowa Democrats, an “eye-popping” 89 percent of Democrats rated Clinton as very or mostly favorable, compared with 7 percent who viewed her very or mostly unfavorably.

“Clinton’s score is eye-popping and shows she is viewed more favorably than any Democrat or Republican by a big margin,” said Jeff Link, an Iowa Democratic operative, told the Register.

Vice President Joe BidenJoe BidenPerez to hit the Sunday shows following election victory Obama congratulates Perez as new Democratic leader GOP: Dems elected 'D.C. insider' as new chairman MORE placed second in the Iowa Poll, followed by and Gov. Martin O’Malley (Md.) and former Gov. Brian Schweitzer (Mont.).