With a small electorate, low turnout and high turnover of voters, this ward is very difficult to call.
Currently Lib Dem Dawn Davidson and Labour's Roy Pennington hold the two seats in Regency.
In 2003, Coun Pennington was elected by a margin of just five votes and Coun Davidson is standing down to stand in Rottingdean Coastal.
All four main parties are fighting hard, with the Greens, Lib Dems and Labour initial favourites to battle it out.
But Regency was once a solid Conservative ward and the Tories' two young prospective councillors - Michael Macfarlane and Robert Nemeth - have been industrious in getting their message across and could cause an upset.
They have been highlighting the rundown state of the seafront and dirty streets as major concerns.
Coun Pennington has represented Regency for 12 years and has regularly put his ward before party politics - notably over the decision to merge all central Brighton parking zones into two larger areas.
Daniel Yates, a former councillor in Adur, is Labour's second candidate and will be fighting the Lib Dem's Sue Bucknall, who is an experienced politician and also a former councillor in Adur.
Kevin Donnelly stands again for the Lib Dems after finishing just five votes behind Roy Pennington last time.
Tackling parking problems and reducing alcohol-related antisocial behaviour are two of their pledges.
Sven Rufus and Hermione Roy are both confident they can take both seats for the Green Party, which has been working hard in the ward.
They will be looking at improving recycling and tackling poor housing.
Two Brighton and Hove Independents are also standing - Corinne Attwood and Tony Davenport.
Parking, graffiti, the future of the West Pier and rubbish collections are all featuring in the campaigns.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article