Five men are seeking to fill the remainder of John F. Kerry’s term in the US Senate. The field will be winnowed to two after the April 30 primary. The candidates seeking their party’s nomination are Democrats Ed Markey and Stephen Lynch, and Republicans Gabriel Gomez, Mike Sullivan, and Dan Winslow.

Click through to see scenes from the campaign trail.

Former US Navy SEAL Gabriel Gomez, a Republican candidate, stopped by the Duxbury Senior Center during lunch on April 29, the day before the primary election.

Earlier in the day Gomez stopped at a restaurant in Marshfield, where he spoke with Judy Stowell (right) of Pembroke as Patricia Buotte of Wareham looked on.

Former US attorney Mike Sullivan, another Republican candidate, stopped by the East Bridgewater Fire Department, where he spoke with acting Chief Timothy Harhen (center), and firefighter Lieutenant Keith McCartney.

Another stop for Sullivan was Peaceful Meadows Ice Cream in Whitman, where he shook hands with Charlie LaDue of Rockland.

State Representative Dan Winslow of Norfolk, the third Republican in the race, spoke with customers at a hardware store in Mansfield.

Winslow also stopped at Craig’s Cafe in Quincy, where he spoke with customer Norman Tuttle.

Representative Ed Markey, a Malden Democrat, campaigned at North Station during the morning commute on April 29. His competitor for the Democratic nomination, Representative Stephen Lynch, did not campaign the day before the election; he said he was feeling ill.

Gomez spoke with Frank Irr (left) and state Representative Paul Frost of Auburn at The Banner Bar and Grille in Worcester on April 28.

Sullivan greeted workers making phone calls in his campaign headquarters in Weymouth on April 28.

Winslow handed campaign information to Bruno Garat (left) and Kim Lapointe of Lunenburg at North End Diner in Leominster on April 28.

Representative Stephen F. Lynch, a South Boston Democrat, greeted constituents April 28 after the Dedham Little League opening day parade, including Hannah, 8, and Nick Wilcox, 10, of Dedham. Lynch’s congressional district includes Dedham.

Markey spoke with Richard Johnson on April 28 after an event at Doyle's Cafe in Jamaica Plain.

Gomez greeted cook Paul LaPierre and owner Casey Beksha on April 27 at the Up Town Pub in Franklin.

Sullivan high-fived Judy Rodolakis, 7, at Davidian Brothers Farm in Northborough on April 27.

Dan Winslow introduced himself to Kerry Quintiliani (right) of Lynn during an April 27 campaign stop at Red's Kitchen & Tavern in Peabody.

Lynch (right) and Iraq war veteran James Crosby of Winthrop, who served in the Marine Corps, attended an April 27 motorcycle rally for wounded veterans at Suffolk Downs.

Markey (center) was joined by Middlesex County Sheriff Peter Koutoujian (left) and state Senator Katherine Clark on April 27 at a campaign event in Arlington.

Lynch spoke to striking nurses during their one-day picket outside Quincy Medical Center on April 11.

Gomez laughed with supporters during an event in South Boston on April 4.

Winslow greeted people before the start of the Rochester Republican Town Committee Meeting at the Ponderosa Sportsman's Club in Acushnet on March 24.

Sullivan greeted Fred Underhill of Rochester, left, as he arrived before the Rochester Republican Town Committee Meeting.

Michael Sullivan, left, and Dan Winslow chatted while attending the Rochester Republican Town Committee Meeting.

Gomez spoke March 17 at the GOP8 St. Patrick’s Day Breakfast at Scituate Country Club. GOP8 is a group of South Shore Republican town committees.

Sullivan joined Gomez at the GOP8 breakfast.

Markey joked with the crowd March 17 at the South Boston St. Patrick’s Day breakfast.

Representative Stephen Lynch shook hands March 10 while marching in the Worcester County St. Patrick's Parade in Worcester.

Markey also campaigned at the Worcester parade.

Representatives Stephen Lynch (left) and Ed Markey greeted each other March 9 at a Service Employees Invernational Union forum in Dorchester.

Former US Attorney Michael Sullivan, a Republican, spoke to supporters March 9 after his campaign kickoff event at the Abington VFW Hall.

Representative Ed Markey spoke to supporters at a rally outside the State House on March 4.

Candidate Gabriel Gomez, a Republican, greeted supporters at a March 2 straw poll event at the Danversport Yacht Club in Danvers.

Candidate Dan Winslow (center), a Republican, spoke with 9-year-old Sophia Davis and her mother, Angela, of Foxborough, during the Danversport Yacht Club straw poll event.

Candidate Mike Sullivan spoke with Mindy McKenzie-Hebert during the straw poll event.

Candidate Gabriel Gomez spoke with diners Feb. 28 at Brody's Diner in Shrewsbury.

Candidate Gabriel Gomez, a Republican, spoke at his first campaign appearance on Feb. 28 in Quincy.

Judy Gertler of Wellesley took a photo of Representative Ed Markey as Markey greeted diners Feb. 23 at Johnny’s Luncheontte in Newton.

Representative Stephen Lynch spoke to supporters on immigration during a Feb. 23 campaign event in Brockton.

Representative Ed Markey (center) and his wife Susan Blumenthal (left) greeted supporters Feb. 2 at his campaign kickoff event.

Representative Ed Markey, a Democrat, gestured to supporters Feb. 2 in Malden at the formal kickoff for his US Senate campaign.

Representative Stephen Lynch, a Democrat, announced his candidacy for the US Senate on Jan. 31 in South Boston.

Representative Stephen F. Lynch spoke with Mike Gagnon (left) of West Springfield and John Blanchard of Chicopee during a stop at O'Brien's Corner Restaurant in Springfield on Jan. 31.