Mitt Romney can breathe a bit easier ahead of Tuesday's GOP primary in Arizona. A new poll shows he's headed for a blowout there.

Public Policy Polling says Romney is ahead of Rick Santorum by a 43-26% margin. Newt Gingrich gets 18% while Ron Paul has 11%.

The poll has even more good news for Romney.

Romney's winning basically winning every voter group in Arizona, even those he's tended to do quite poorly with. He leads Santorum 39-33 with Evangelicals, 39-23 with Tea Party voters (Santorum's in 3rd, Gingrich is actually 2nd at 30%), and 37-29 with those describing themselves as 'very conservative.' We project the Mormon vote at 14%. Romney leads 77-9 with them, but he has a 38-29 advantage with non-Mormons as well. Seniors are a key base of support for him in Arizona as they are everywhere. He leads 53-22 with them.

Santorum may have misstepped by talking too much about social issues in the last few weeks. 68% of Arizona voters say economic issues are their top concern when deciding who to vote for, compared to just 11% who say social issues are paramount. With the folks most concerned about economic issues he trails Romney 48-24.

It's worth noting that Romney's improved his image in the closing stretch in Arizona- it's not just bringing down Santorum that's put him in position for this big win. Romney's net favorability is now +31 at 62/31, up from +24 at 58/34 a week ago.