It's likely to be a tight race between Prime Minister Gordon Brown and Conservative Party leader David Cameron come May 6 and the pair's spouses are set to play a bigger role in the outcome than ever before.
Indeed, many are already saying they find the politicians' other halves more interesting than the candidates themselves.
Straight after her husband announced the election on Tuesday, Sarah, who has pledged not to give up tweeting during the campaign, was boarding a train with him to Rochester, Kent.
There she visited a local supermarket where she was presented with a bouquet and chatted with staff and customers.
The next morning, dressed in a lime cardigan and black-and-grey-spotted dress, she accompanied Gordon to the GMTV studios for an interview.
Then it was off to sample some healthy smoothies at the Innocent factory in west London.
Samantha has also been busy. Having launched the 'Web Sam Cameron' video series to support her husband, she was by his side as he kicked off the Conservatives' general election campaign opposite the Houses of Parliament on Tuesday.
The following day it was off to work as normal at luxury stationers and leather goods firm Smythson, where the pregnant mum-of-two is creative director.
Sam has said she will continue to work and campaign for her husband throughout her pregnancy, taking part in two events per week.