With the primary election approaching, 6th Congressional District Republican candidates Wil Armstrong and Mike Coffman each dipped into their personal bank accounts last month for ad buys.    

Armstrong has loaned his campaign $500,000 in July, according to new FEC records. Coffman loaned his campaign $100,000, FEC records show. 

Armstrong manager Jack Stansbery said the $500,000 went to "getting our message out."

"Obviously, TV (advertising) is expensive, and voter contact in general," Stansbery said.

Coffman manager Dustin Zvonek said Coffman loaned himself the $100,000 last month after hearing of a $500,000 ad buy by the Armstrong campaign.

Coffman wanted "insurance money" in case the Armstrong campaign began running negative ads against him, Zvonek said.

The money was used for ads to fight Armstrong ads branding him a "career politician," Zvonek said.

Also, the Coffman campaign hasn't been running TV ads this week -- that's because the campaign is building up for a last-minute ad blitz next week, Zvonek said.

A new Coffman ad will begin airing next Sunday or Monday, Zvonek said.

Armstrong ended July with $399,755.77 cash-on-hand; Coffman reported having $147,944.44 cash-on-hand.