Ukip has announced plans to target the seats of senior Tories in the 2015 general election, as a poll suggested that the vast majority of the four million people who voted for the party in the European elections would do the same next year.

Nigel Farage's party has said it will stand candidates in all six seats in Worcestershire, one of whom would challenge the new culture minister, Sajid Javid, and the government's assistant whip, Harriet Baldwin.

The news suggests that following their recent success in the polls, Ukip intends to ramp up the pressure on the Tories.

A ComRes poll commissioned by Ukip's main financial backer, Paul Sykes, suggested that 86% of the 4.3 million people who gave the party its first national victory in the European elections, would vote for it again in the general election.

ComRes also found that nearly half of those who voted for Ukip in the European election had supported the Tories at the last general election in 2010. Fifteen percent had been Labour voters in 2010, and 16% Liberal Democrat voters.

In an article in the Telegraph as the results of his poll were released, Sykes said: "Conservative MPs, with a few honourable exceptions, appear to be in denial about the scale of the popular uprising against our current rulers. This is despite their party finishing third in the elections.

"They appear to think that the Ukip threat will go away - it won't - or that the economic recovery will float them off the political rocks. They should recall what happened in 1997. Then the economy had been growing strongly for four years. That did not stop John Major going down to the worst Tory defeat since 1832."

James Carver, a Ukip MEP for Worcestershire, said that the party has already selected one candidate in the county and was in the process of finding five more.

"We won't be rushed into the selections, but we are planning to go into it with candidates in all six seats," he said.

"Whether you agree with us not, we're putting candidates up everywhere in Worcestershire and it'll make the other parties scratch their heads.

"Worcester is obviously a marginal seat. We plan to launch a strong campaign across the county and aim to challenge on all fronts," he told the Worcester News.

Ukip finished second in eight of the 11 Worcester city council seats in last week's local elections.

Sir Peter Luff, the Tory MP for Mid-Worcestershire who is retiring next year, said the main parties needed to communicate better.

"In the European elections people tended to vote with UKIP because it was risk free, but a general election is different. You're electing a government which makes decisions that affect people every day," he said.

"I don't see what policies UKIP have other than leaving Europe. All the main parties need to stand up and communicate theirs in a way everybody understands so they can see we're on their side."

Despite its success in the area, Ukip had to sack a councillor in Worcerstershire within days of his election.

On Wednesday Dave Small was kicked out of the party after it emerged that he had referred to gay people as "perverts" and African immigrants as "scroungers".

In comments posted on Facebook, which he later defended, he also attacked Elton John and the BBC broadcaster Clare Balding over their sexuality and referred to "our sworn enemies in the Muslim world".