Donald Trump has hired Republican strategist Rick Wiley, last seen managing Scott Walker’s 2016 presidential run, to boost his campaign heading into the Republican National Convention.

From the Washington Post:

NEW YORK — Donald Trump has hired a veteran campaign operative with deep roots in the Republican Party establishment to take a senior position on his presidential campaign, as the GOP front-runner moves quickly to incorporate seasoned professionals in his inner circle.

Rick Wiley, who has more than two decades of experience in state and national politics and most recently served as campaign manager for Wisconsin Gov. Scott Walker’s presidential bid, is joining the Trump campaign as national political director, two Republicans with knowledge of the hire told The Washington Post.

Throughout the season, Trump has been criticized for his weak ground game in important states compared to rival Ted Cruz, a Texas senator. Wiley arrives with a mandate from Trump to beef up the campaign’s field operations in the states with primaries ahead on the calendar, including delegate-rich California, as well as prepare for what the Trump team views as a likely general election.

Wiley is the latest big-name hire for Trump, joining a senior team that now includes longtime GOP strategist Paul Manafort, who was hired in late March to manage the campaign’s delegate operations and summer convention plans and also has broad authority with overall campaign strategy.

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