Republican presidential candidate Mitt Romney will make a public stop in Troy on Sunday as part of a five-day, six-state bus tour. Romney will tour Ohio with U.S. Sen. Rob Portman, who has been rumored as a vice presidential candidate.

The Troy stop will be at K’s Hamburger Shop, a longtime Troy landmark at 117 E. Main St., according to Romney Ohio spokesman Chris Maloney. The event will be in the early evening, but no firm time is listed, as Troy will be Romney’s third Ohio stop of the day.

K’s has been a frequent site of Republican campaigns — Rick Santorum, who fought Romney for the Republican nomination this spring, stopped there in March. And Dan Quayle visited K’s when he was vice president.

Miami County is a Republican stronghold, but President Barack Obama’s campaign is trying to make inroads, opening a Troy campaign office last month just a block west of K’s.

The Romney campaign is calling this trip the “Every Town Counts” bus tour. It will start Friday in New Hampshire, then swing through Pennsylvania, Ohio, Wisconsin, Iowa and Michigan.

In all six of those states, pollsters consider the race between Obama and Romney to be either a toss-up or fairly close. Many analysts have labeled New Hampshire, Ohio and Iowa as “swing states,” with Pennsylvania, Wisconsin and Michigan often listed as leaning toward Obama.

Romney will begin Sunday’s Father’s Day swing through Ohio at a pancake breakfast in Brunswick, about 25 miles southwest of Cleveland. In the afternoon, his bus will stop in Newark, 35 miles east of Columbus.

The bus tour is focusing on small towns, and all three Ohio stops are cities of between 25,000 and 50,000 people. All three are in counties where Obama lost to John McCain in 2008. Obama won only 22 of Ohio’s 88 counties, but carried the state by winning 10 of the 11 largest counties.

The Romney campaign claimed that “President Obama has paid little attention to the everyday concerns of the American people,” handing him blame for the nation’s economic hardship, but adding that you still find “boundless optimism” in America’s small towns.

Jessica Kershaw, press secretary for Obama’s Ohio campaign, criticized Romney, saying he supports the same policies that hurt the economy and the middle class.

“It’s clear that folks who live in small towns across Ohio understand very well that the president shares the values that have built their communities: hard work and responsibility should be rewarded, everyone does better when everybody does their share and we work to create an economy built to last.”

Romney is also expected to be in Cincinnati on Wednesday night for a private fundraising event.

Obama also will be in Ohio this week, at a campaign event at Cuyahoga Community College in Cleveland on Thursday afternoon.