By Jonathan Davies

One week from now, the UK population will be heading to the polls to case their vote in one of the most tightly contested general elections in recent history.

So, with things so close, we're bringing some of the most watched polls over the past 30 days to give you an indication of how the election may turned out.

BBC Poll of Polls

As of 30 April:

Conservatives - 34%
Labour - 33%
UKIP - 14%
Liberal democrats - 8%
Green - 6%
Others - 5%

It's been a good month for the Conservatives in the BBC's Poll of Polls. The Tories haven't trailed Labour since 11 April, either leading or falling level with their rivals for the majority of the month.

Survation

As of 25 April:

Conservatives - 33%
Labour - 30%
UKIP - 18%
Liberal Democrats - 9%
Green - 4%
Others - 6%

April started with Labour extending its gap over the Tories from just one percentage point to four. But midway through the month, the gap closed and Conservatives took the lead. They now hold a three point lead over their closest rivals.

TNS-BRMB

As of 27 April:

Conservatives - 34%
Labour - 33%
UKIP - 15%
Liberal Democrats - 8%
Green - 5%
Others - 6%

This weekly poll has seen Labour and the Conservatives switch places three times. But with a week to go, it's the Conservatives who hold a one point lead.

Opinium

As of 24 April:

Conservatives - 34%
Labour - 33%
UKIP - 13%
Liberal Democrats - 9%
Green - 6%
Others - 5%

Labour are yet to lead the Conservatives in any of the four polls taken by Opinium in April, although Ed Miliband's party closed the gap to just one point in the latest survey on 24 April.

Populus

As of 26 April:

Labour - 36%
Conservatives - 33%
UKIP - 14%
Liberal Democrats - 8%
Green - 5%
Others - 4%

April has been a great month for Labour on the Populus poll. It has led the Conservatives in seven of the eight surveys taken this month, only drawing level once.

ICM

As of 26 April:

Conservatives - 35%
Labour - 32%
UKIP - 13%
Liberal Democrats - 9%
Green - 5%
Others - 6%

There have only been three ICM polls in April, but they show some interesting figures. The first, taken on 12 April, showed the Conservatives with a six point lead over Labour, and UKIP, the Lib Dems and Green party neck-and-neck with Lib Dems edging things at 8% against the others' 7%. But Labour has closed the gap on the Tories to three points. And UKIP now lead the Lib Dems and Greens 13-9-5.

Ipsos Mori

As of 28 April:

Conservatives - 35%
Labour - 30%
UKIP - 10%
Liberal Democrats - 8%
Green - 8%
Others - 9%

There have only been two Ipsos Mori polls in April, but they show a seven point swing in the favour of the Conservatives. Labour led by two halfway through the month, but the Tories now hold a five point lead. Things are tight between UKIP, the Lib Dems and Greens - there's just two points between them.

ComRes

As of 28 April:

Conservatives - 35%
Labour - 35%
UKIP - 11%
Liberal Democrats - 7%
Green - 6%
Others - 6%

Labour hasn't led the Conservatives in the ComRes poll in April, but it did close a four point gap to draw level in the latest survey. The Lib Dems were neck-and-neck with UKIP earlier in the month but have dropped back with the Green part hot on its heels.

YouGov

As of 29 April:

Conservatives - 35%
Labour - 34%
UKIP - 12%
Liberal Democrats - 9%
Green - 4%
Others - 6%

The YouGov poll has chopped and changed throughout April. Of the 23 polls taken this month, the lead has changed 14 times. Every day this week the Tories and Labour have switched places on 35% and 34%. The latest showed the Conservatives with a one point lead.