Mitt Romney is picking up an endorsement from former Vice President Dan Quayle.
Romney is set to meet Tuesday with Quayle in Paradise Valley, Ariz., where Quayle is expected to announce his backing of the former Massachusetts governor's presidential bid.
Among other activities scheduled Tuesday by Republicans seeking the GOP nomination, Rick Santorum is hosting town hall meetings in the Iowa towns of Storm Lake and Spencer.
And Jon Huntsman is speaking to the Heritage Foundation's Bloggers Briefing in Washington.
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