Green Party candidate Caroline Lucas is hoping she will make history by winning her party's first ever Parliamentary seat.

But her opponents, Labour's Nancy Platts, the Conservative's Charlotte Vere and Liberal Democrat Berni Millam, have other ideas.

Help us track how their campaigns are progressing by logging where you've seen them - and if you spoke to them, what they said.

To add a marker, you'll need a Google account. Click here, then click Edit in the top left hand corner, select a marker and place it where you've seen a candidate. Please select the appropriate colour marker, and include the time, date and address of your encounter.