The singer took to micro-blogging site Twitter to express his feelings about theAam Aadmi Party (AAP) chief.
"I have met the most humble man, the well grounded person and yes our CM of delhi @ArvindKejriwal(sic)," Mika tweeted.
The "Tu mere agal bagal hai" hitmaker also posted photos of the meeting and thanked the leader for "the lovely tea".
"I don't have any words, how humble and simple man Mr.@ArvindKejriwal and sunita bhabi are. Thanxx for the lovely tea," he added.
The 37-year-old crooner also met AAP leader Kumar Vishwas.
"Also met the best frend the best man and very good writer @DrKumarVishwas... Brother I'm waiting for the song (sic)," he wrote.