WASHINGTON (AP) — With his Democratic foe now certain, Republican John McCain is deploying dozens of staffers into battleground states, boasting of improved fundraising and expanding his advertising into some of the most competitive terrain of the general election.

“I’m running for president to keep the country I love safe,” the Arizona senator says in a new commercial unveiled Friday. The ad was the start of what the campaign said would be a sustained effort to spread McCain’s message in Electoral College targets between now and the fall.

As Barack Obama sewed up the Democratic nomination this week, McCain’s team plunged into the general election. The Republican made his opening argument for the next phase of the presidential campaign in a speech Tuesday in which he tried to distance himself from the unpopular President Bush while arguing the Obama offers change that would imperil the country.

At the same time, the campaign made several moves over the past few days as it gears up to face Obama and enthusiastic Democrats in a treacherous political environment for Republicans.

Organizationally, McCain’s 10 regional campaign managers were in place across the country — and building up their staffs — as of Sunday and the Republican National Committee named nine field directors a day later. By the end of the month, the McCain-RNC political operation plans to be running in 17 states, with 76 “Victory Centers,” 94 regional and state campaign staffers and 145 RNC staffers.

Overall, campaign advisers say the joint political team will number some 500 people. They are dismissing the grumbling of some Republicans that perhaps the campaign has been too slow to increase its organization and, perhaps, squandered its three-month head start while the Democratic primary continued. McCain wrapped up the GOP nomination in March.

Financially, McCain and the RNC also reported significant fundraising.

McCain has held dozens of fundraisers across the country over the past three months, including three in Florida this week. They were closed to the media, a campaign policy that conflicts with McCain’s claim to be the most transparent and accessible presidential candidate in history as well as with his crusade against the influence of money in politics.

At the end of May, McCain and the RNC raised a combined $45 million and had a total of $85 million cash on hand. Obama has been a prolific fundraiser and had $46.5 million in hand at the end of April (he has not announced his May fundraising). But the DNC has not done as well fundraising, collecting nearly $5 million in may and ending the month with $4 million in the bank.

“We’re not being outraised by hundreds of millions of dollars this month or last month,” said Rick Davis, McCain’s campaign manager.

Still, with Obama as the titular head of the Democratic Party, the national committee is now likely to see its fundraising improve dramatically.

On advertising, McCain has been on the air intermittently in eight battleground states for two months as he tested potential themes at a $3.7 million cost. But the latest effort is much more expansive, with ads running in 54 markets in 10 states. The campaign called it a significant buy though refused to disclose the cost. Since Monday, the campaign has spent nearly $1 million in four states, and one Republican estimated the new buy cost several million dollars.

“We don’t anticipate coming down now until Election Day,” Davis said. He said the campaign will stay on the air in the 10 states as long as they remain competitive, and he said he anticipates adding more states and more markets as the campaign moves forward.

Six are states Bush narrowly won in 2000 — Ohio, Iowa, Missouri, Colorado, New Mexico and Nevada — and that McCain must defend. Four are states Democrat John Kerry won by slim margins four years ago — Minnesota, Wisconsin, Michigan and Pennsylvania — and that McCain is looking to win.

Other potential Democratic-held targets for McCain’s campaign include, Washington, Oregon, New Hampshire, New Jersey, Delaware, Maine and Connecticut. While McCain often talks about competing in California, Davis said the campaign was “probably not going to commit a lot in resources” to the state.

At the same time, McCain likely will have to spend money in the coming months defending GOP turf in Virginia and Florida, and may even be forced to devote resources to longtime GOP strongholds Obama is considering making a play for — like Georgia, Mississippi, Louisiana, North Carolina or Montana.

Campaigning in Florida on Friday, McCain reiterated his support for a Senate-passed bill, ardently sought by the Bush administration, that would give telecommunications companies immunity for helping the government wiretap Americans without court warrants in the aftermath of the Sept. 11, 2001, terrorist attacks. The tapping was done without warrants although the Foreign Intelligence Surveillance Act requires them. Bush claims he has constitutional authority to tap without warrants despite the statute.

In urging the House to accept the Senate bill, McCain said it would go along way to clear up ambiguity over whether Bush’s actions were legal. “One court has said that he was legal in what he did; other courts have said that it’s not,” McCain said. “The whole issue can be resolved by passing the … bill.”