Dimitrov's modernizing views, expertise in the field of economics, and untarnished reputation led to his election with nearly 70% of the vote as party leader in December 2008, despite his relative youth.

His political and economic public policy views are neo libertarian – he has long been a proponent of a small flat tax of 10% for corporations and payroll alike.

[citation needed] The difference will be paid by creating a Silver Investment Fund, which will be given vast amounts of money from the budget surplus and other economies made by more efficient management of and workforce cuts in the public administration.

[citation needed] An outspoken critic of the tripartite government, he spoke out against what he perceived as a lack of transparency involved with the handling of a package of $800 million from the budget surplus voted before the end of the 2008 financial year.

As he often mentions it, his hope is that enough young professionals, new faces with unmarred reputations, will decide to join UDF and help in making Bulgaria something more than just a "deep province of Europe".

On 13 April 2009, the Sofia City Court ruled that the main document with respect to running the party is illegitimate, stating that: “it is not very democratic that members of UDF should elect their leader via anonymous vote”.

Seizing the opportunity, the former leader, Plamen Youroukov, said that the coalition with DSB must be revised and annulled as it is illegitimate, and he thinks that the Court “must have serious reasons” to refuse to write in the register the new leadership of UDF.

Before the elections, Petrov was calling for Dimitrov to step down because of "unsatisfactory performance of the Blue Coalition and not complying with the party's rules".

[citation needed] At the beginning, he came across as a young expert with a good reputation and therefore fared well with the public, but Dimitrov was seen as lacking charisma and communication abilities.