[citation needed] From 1997 – 2001 Cox worked on a series of Virginia General Assembly campaigns, eventually helping to elect more than two dozen members.
[citation needed] From 2002 – 2005, Cox helped direct communications and fundraising for the Mercatus Center at George Mason University, and from 2006 – 2008 worked alongside Tim Phillips at Americans for Prosperity, directing its fundraising, state chapter development, and issue campaigns.
A year after Barack Obama won Virginia by 7 points, McDonnell enjoyed a 17-point victory[2] over Creigh Deeds, resulting in a sweep of all three statewide offices.
[3] During Cox's tenure, the RGA strengthened its majority, electing 31 Republican governors, with notable wins in traditional Democratic-leaning states like Massachusetts, Maryland, Illinois, and Maine.
[11] After President Donald Trump's election in 2016, Cox founded "GuidePost Strategies", a federally-focused government and public affairs firm, along with former RGA Policy Director Marie Sanderson.
[citation needed] Cox has appeared on CNBC, Fox Business, C-SPAN, NPR, and the Hugh Hewitt Show and is frequently cited for political commentary and analysis in national publications.