The National Rifle Association pounced when former Ohio Gov. Ted Strickland, a Democrat running for the U.S. Senate, declared at an AFL-CIO event in Cleveland that the death of conservative Supreme Court Justice Antonin Scalia "happened at a good time."

Scalia remains a hero to many gun owners and the NRA alerted its members to Strickland's disrespect. It was part of a barrage by the group to portray its one-time ally as an anti-gun politician interested only in money and power.

Ohio Race Shows How NRA Flexes Its Political Muscle

"That was painful," said Strickland, recalling the NRA's effort to tear down the public trust he'd spent years building. "They were out to get me."

Ohio Race Shows How NRA Flexes Its Political Muscle

The anti-Strickland campaign in the battleground state of Ohio two years ago is a window into how the influential gun rights group wields its political muscle. That clout will be on display heading into the 2018 midterm elections as gun control advocates demand swift action following the Feb. 14 shooting at a high school in Florida.

Ohio Race Shows How NRA Flexes Its Political Muscle

The NRA's deep pockets and bare-knuckled approach leave the impression it effectively purchases loyalty from lawmakers. But the NRA actually donates small amounts of money to candidates when compared to the large sums it spends on potent get-out-the-vote operations and ad campaigns.

NRA-funded advertisements that air on cable networks and travel across the internet during the months and weeks before an election are carefully crafted to warn members of candidates that, if elected, will come for their guns. The NRA's political action committee, the Political Victory Fund, also grades elected officials on an A to F scale, a shorthand voting guide that steers members to pro-gun candidates.

The Political Victory Fund and the NRA's lobbying arm spent about $52.5 million overall during the 2016 elections on "independent expenditures," according to political money website OpenSecrets.org. There's no limit on this type of campaign spending and it includes money for television and online advertising, mailers and other forms of communication designed to support or oppose a particular candidate.

Nearly 70 percent of the NRA's 2016 budget was used to target Democrats, with Hillary Clinton topping the list of candidates the group sought to defeat. The rest went to backing Donald Trump and congressional Republicans who've consistently shot down attempts by Democrats to approve gun control measures in the wake of mass shootings in the United States.

But pressure for at least modest firearms restrictions is heavy after 17 people were killed at Marjory Stoneman Douglas High School, which in turn raises the stakes for the NRA. Trump stunned his GOP allies last week when he sided with Democrats by urging quick and substantial changes to the nation's gun laws. Yet later, after meeting with Trump, NRA leaders declared the president and his administration "don't want gun control." The mixed messages brought action on gun legislation in Congress to a halt.

The figures compiled by Open Secrets show that in Ohio the NRA spent nearly $1.6 million to oppose Strickland in the 2016 Senate race, while devoting about half as much to support the Republican incumbent, Sen. Rob Portman, who defeated Strickland by a wide margin.

The NRA donated $9,900 directly to Portman's campaign, the same amount the group gave to 12 other Republican lawmakers. Unlike independent expenditures, donations from individuals and PACs are capped for each election cycle. Portman said the NRA's money represented just a fraction of the more than $25 million his campaign raised in 2016 and he denied the gun group acquired any leverage through the donations.

"I never make a decision based on a contribution," Portman said. "That's just not how you operate."

The NRA's Political Victory Fund ran its first ad against Strickland in July when the Ohio Senate race was still competitive, and the 30-second spot illustrates the gun group's tactics. Strickland is portrayed as a traitor for turning his back on gun rights.

"Ted Strickland. Out for power. Out for money. Out . . . for himself," the narrator said as suspenseful music plays in the background.

Strickland said the NRA succeeded in shifting the impression many Ohioans had of him. Suddenly it didn't matter as much that he was a steelworker's son who'd grown up on a dirt road in the state's Appalachia region. Or that he was raised among guns and just a few years before the Senate race had earned the NRA's coveted A+ rating.