Last month, 511 candidates were barred from participating in the 7 March Iraqi elections, ostensibly due to their links with Saddam Hussein's Ba'athist regime. While this applied to a mix of Sunni, Shia and secular candidates, the lack of transparency and accountability ensured that the step was widely regarded as a measure to marginalise the Sunni community.
Despite a history of co-operation and peaceful coexistence, sectarian identities were politicised in Iraq by Saddam's extensive use of patronage networks. The security vacuum and insecurities that have plagued the country post-occupation have exacerbated these tensions. So has the use of proxies by Saudi Arabia and Iran.
The boycott by Sunni parties undermined the legitimacy of the 2005 election and a similar scenario was feared again this year. The decision by the Independent High Electoral Commission to allow the barred candidates to run, although not to hold office until they are cleared of Ba'athist links, should restore some credibility to the process.
The decision appears to have been pushed through in part by US Vice-President Joe Biden, who visited Baghdad late last month. As such, the move has been dismissed by some as an attempt to ensure "smooth sailing" until the US withdrawal.
Meanwhile, there are visible signs that the problems are far more ingrained in Iraqi society.
Since Monday there have been five reported bombings in Baghdad, Karbala and Hilla. Wednesday's attacks in Karbala came two days after a woman disguised as a Shia pilgrim struck a procession in north Baghdad, killing at least 38 people.
The targets are Shias travelling to Karbala to mark the end of 40 days of mourning the anniversary of Imam Hussein's death. The pilgrimage was banned under Saddam and has routinely attracted violence since it started again in 2004.
Although the violence is undermining Prime Minister al-Maliki's election platform of improving security for Iraqis, it is arguably doing more to halt attempts at reconciling existing sectarian tensions. While the perpetrators clearly have an interest in preventing the latter, it is surely in the interests of Iraqis and regional security.