Former United Nations Ambassador John Bolton’s political action committee and super-PAC raised more than $2.3 million in the second quarter as Bolton contemplates a presidential run.

The groups have raised $4 million for the cycle overall, and now have nearly $3 million cash on hand combined, according to figures provided first to The Hill.

That includes nearly $400,000 cash on hand for the PAC, which has already delivered contributions to a handful of 2014 House and Senate candidates, and more than $2.5 million for the super-PAC, which is preparing to begin independent expenditures for candidates Bolton supports.

The former ambassador has waded into the midterm elections this cycle in an effort to boost his profile and shine a spotlight on national security issues, as he weighs a potential 2016 run for president.

“Given the Obama administration’s recent national security misstepps regarding Israel, Syria, Iran, Iraq, Ukraine and elsewhere, the American people need to know that our national interests are facing grave threats with inadequate leadership in Washington," Bolton said in a release. 

“Clearly, it is now critical to identify and support candidates for office who have the courage, leadership and commitment to secure America’s interests overseas.”

The PAC has already contributed to Republican Senate candidates Rep. Tom Cotton (Ark.), state Sen. Joni Ernst (Iowa), Terri Lynn Land (Mich.) and Sen. Mitch McConnell (Ky.), as well as GOP House candidates and incumbents including Martha McSally, challenging Rep. Ron Barber (D-Ariz.); Barbara Comstock, running for retiring Rep. Frank Wolf’s (R-Va.) seat; Rep. Adam Kinzinger (Ill.); Robert Dold, challenging Rep. Brad Schneider (D-Ill.), and Rep. Mike Pompeo (R-Kan.).

The PAC is planning to increase its contributions significantly to candidates committed to strong national security in the coming quarter.